1054 lines
38 KiB
Markdown
Executable file
1054 lines
38 KiB
Markdown
Executable file
<div align="center">
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<a href="https://colord.omgovich.ru/">
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<img src="assets/logo.png" width="280" height="210" alt="colord" />
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</a>
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</div>
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<div align="center">
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<a href="https://npmjs.org/package/colord">
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<img alt="npm" src="https://img.shields.io/npm/v/colord.svg?labelColor=dd3a5e&color=6ead0a" />
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</a>
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<a href="https://github.com/omgovich/colord/actions">
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<img alt="build" src="https://img.shields.io/github/workflow/status/omgovich/colord/Node.js%20CI/master.svg?labelColor=dd3a5e&color=6ead0a" />
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</a>
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<a href="https://codecov.io/gh/omgovich/colord">
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<img alt="coverage" src="https://img.shields.io/codecov/c/github/omgovich/colord.svg?labelColor=dd3a5e&color=6ead0a" />
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</a>
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<a href="https://npmjs.org/package/colord">
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<img alt="no dependencies" src="https://badgen.net/bundlephobia/dependency-count/colord?labelColor=dd3a5e&color=6ead0a" />
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</a>
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<a href="https://npmjs.org/package/colord">
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<img alt="types included" src="https://badgen.net/npm/types/colord?labelColor=dd3a5e&color=6ead0a" />
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</a>
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</div>
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<div align="center">
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<strong>Colord</strong> is a tiny yet powerful tool for high-performance color manipulations and conversions.
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</div>
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## Features
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- 📦 **Small**: Just **1.7 KB** gzipped ([3x+ lighter](#benchmarks) than **color** and **tinycolor2**)
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- 🚀 **Fast**: [3x+ faster](#benchmarks) than **color** and **tinycolor2**
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- 😍 **Simple**: Chainable API and familiar patterns
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- 💪 **Immutable**: No need to worry about data mutations
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- 🛡 **Bulletproof**: Written in strict TypeScript and has 100% test coverage
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- 🗂 **Typed**: Ships with [types included](#types)
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- 🏗 **Extendable**: Built-in [plugin system](#plugins) to add new functionality
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- 📚 **CSS-compliant**: Strictly follows CSS Color Level specifications
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- 👫 **Works everywhere**: Supports all browsers and Node.js
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- 💨 **Dependency-free**
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## Benchmarks
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| Library | <nobr>Operations/sec</nobr> | Size<br /> (minified) | Size<br /> (gzipped) | Dependencies | Type declarations |
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| ----------------------------- | ----------------------------- | --------------------------------------------------------------------------------------------------------------------- | ------------------------------------------------------------------------------------------------------------------------ | ------------------------------------------------------------------------------------------------------------------------------------ | ---------------------------------------------------------------------------------------------------------------- |
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| <nobr><b>colord 👑</b></nobr> | <nobr><b>3,524,989</b></nobr> | [](https://bundlephobia.com/result?p=colord) | [](https://bundlephobia.com/result?p=colord) | [](https://bundlephobia.com/result?p=colord) | [](https://bundlephobia.com/result?p=colord) |
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| color | 744,263 | [](https://bundlephobia.com/result?p=color) | [](https://bundlephobia.com/result?p=color) | [](https://bundlephobia.com/result?p=color) | [](https://bundlephobia.com/result?p=color) |
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| tinycolor2 | 971,312 | [](https://bundlephobia.com/result?p=tinycolor2) | [](https://bundlephobia.com/result?p=tinycolor2) | [](https://bundlephobia.com/result?p=tinycolor2) | [](https://bundlephobia.com/result?p=tinycolor2) |
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| ac-colors | 660,722 | [](https://bundlephobia.com/result?p=ac-colors) | [](https://bundlephobia.com/result?p=ac-colors) | [](https://bundlephobia.com/result?p=ac-colors) | [](https://bundlephobia.com/result?p=ac-colors) |
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| chroma-js | 962,967 | [](https://bundlephobia.com/result?p=chroma-js) | [](https://bundlephobia.com/result?p=chroma-js) | [](https://bundlephobia.com/result?p=chroma-js) | [](https://bundlephobia.com/result?p=chroma-js) |
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The performance results were generated on a MBP 2019, 2,6 GHz Intel Core i7 by running `npm run benchmark` in the library folder. See [tests/benchmark.ts](https://github.com/omgovich/colord/blob/master/tests/benchmark.ts).
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## Getting Started
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```
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npm i colord
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```
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```js
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import { colord } from "colord";
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colord("#ff0000").grayscale().alpha(0.25).toRgbString(); // "rgba(128, 128, 128, 0.25)"
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colord("rgb(192, 192, 192)").isLight(); // true
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colord("hsl(0, 50%, 50%)").darken(0.25).toHex(); // "#602020"
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```
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## Supported Color Models
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- Hexadecimal strings (including 3, 4 and 8 digit notations)
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- RGB strings and objects
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- HSL strings and objects
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- HSV objects
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- Color names ([via plugin](#plugins))
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- HWB objects and strings ([via plugin](#plugins))
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- CMYK objects and strings ([via plugin](#plugins))
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- LCH objects and strings ([via plugin](#plugins))
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- LAB objects ([via plugin](#plugins))
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- XYZ objects ([via plugin](#plugins))
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## API
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### Color parsing
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<details>
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<summary><b><code>colord(input)</code></b></summary>
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Parses the given input and creates a new Colord instance. String parsing strictly conforms to [CSS Color Level Specifications](https://www.w3.org/TR/css-color-4/#color-type).
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```js
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import { colord } from "colord";
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// String input examples
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colord("#FFF");
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colord("#ffffff");
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colord("#ffffffff");
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colord("rgb(255, 255, 255)");
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colord("rgba(255, 255, 255, 0.5)");
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colord("rgba(100% 100% 100% / 50%)");
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colord("hsl(90, 100%, 100%)");
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colord("hsla(90, 100%, 100%, 0.5)");
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colord("hsla(90deg 100% 100% / 50%)");
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colord("tomato"); // requires "names" plugin
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// Object input examples
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colord({ r: 255, g: 255, b: 255 });
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colord({ r: 255, g: 255, b: 255, a: 1 });
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colord({ h: 360, s: 100, l: 100 });
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colord({ h: 360, s: 100, l: 100, a: 1 });
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colord({ h: 360, s: 100, v: 100 });
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colord({ h: 360, s: 100, v: 100, a: 1 });
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```
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Check out the ["Plugins"](#plugins) section for more input format examples.
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</details>
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<details>
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<summary><b><code>getFormat(input)</code></b></summary>
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Returns a color model name for the input passed to the function. Uses the same parsing system as `colord` function.
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```js
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import { getFormat } from "colord";
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getFormat("#aabbcc"); // "hex"
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getFormat({ r: 13, g: 237, b: 162, a: 0.5 }); // "rgb"
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getFormat("hsl(180deg, 50%, 50%)"); // "hsl"
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getFormat("WUT?"); // undefined
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```
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</details>
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### Color conversion
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<details>
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<summary><b><code>.toHex()</code></b></summary>
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Returns the [hexadecimal representation](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#rgb_colors) of a color. When the alpha channel value of the color is less than 1, it outputs `#rrggbbaa` format instead of `#rrggbb`.
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```js
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colord("rgb(0, 255, 0)").toHex(); // "#00ff00"
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colord({ h: 300, s: 100, l: 50 }).toHex(); // "#ff00ff"
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colord({ r: 255, g: 255, b: 255, a: 0 }).toHex(); // "#ffffff00"
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```
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</details>
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<details>
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<summary><b><code>.toRgb()</code></b></summary>
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```js
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colord("#ff0000").toRgb(); // { r: 255, g: 0, b: 0, a: 1 }
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colord({ h: 180, s: 100, l: 50, a: 0.5 }).toRgb(); // { r: 0, g: 255, b: 255, a: 0.5 }
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```
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</details>
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<details>
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<summary><b><code>.toRgbString()</code></b></summary>
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```js
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colord("#ff0000").toRgbString(); // "rgb(255, 0, 0)"
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colord({ h: 180, s: 100, l: 50, a: 0.5 }).toRgbString(); // "rgba(0, 255, 255, 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.toHsl()</code></b></summary>
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Converts a color to [HSL color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and returns an object.
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```js
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colord("#ffff00").toHsl(); // { h: 60, s: 100, l: 50, a: 1 }
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colord("rgba(0, 0, 255, 0.5) ").toHsl(); // { h: 240, s: 100, l: 50, a: 0.5 }
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```
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</details>
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<details>
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<summary><b><code>.toHslString()</code></b></summary>
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Converts a color to [HSL color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and expresses it through the [functional notation](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#hsl_colors).
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```js
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colord("#ffff00").toHslString(); // "hsl(60, 100%, 50%)"
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colord("rgba(0, 0, 255, 0.5)").toHslString(); // "hsla(240, 100%, 50%, 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.toHsv()</code></b></summary>
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Converts a color to [HSV color space](https://en.wikipedia.org/wiki/HSL_and_HSV) and returns an object.
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```js
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colord("#ffff00").toHsv(); // { h: 60, s: 100, v: 100, a: 1 }
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colord("rgba(0, 255, 255, 0.5) ").toHsv(); // { h: 180, s: 100, v: 100, a: 1 }
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```
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</details>
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<details>
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<summary><b><code>.toName(options?)</code></b> (<b>names</b> plugin)</summary>
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Converts a color to a [CSS keyword](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#color_keywords). Returns `undefined` if the color is not specified in the specs.
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```js
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import { colord, extend } from "colord";
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import namesPlugin from "colord/plugins/names";
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extend([namesPlugin]);
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colord("#ff6347").toName(); // "tomato"
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colord("#00ffff").toName(); // "cyan"
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colord("rgba(0, 0, 0, 0)").toName(); // "transparent"
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colord("#fe0000").toName(); // undefined (the color is not specified in CSS specs)
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colord("#fe0000").toName({ closest: true }); // "red" (closest color available)
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```
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</details>
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<details>
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<summary><b><code>.toCmyk()</code></b> (<b>cmyk</b> plugin)</summary>
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Converts a color to [CMYK](https://en.wikipedia.org/wiki/CMYK_color_model) color space.
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```js
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import { colord, extend } from "colord";
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import cmykPlugin from "colord/plugins/cmyk";
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extend([cmykPlugin]);
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colord("#ffffff").toCmyk(); // { c: 0, m: 0, y: 0, k: 0, a: 1 }
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colord("#555aaa").toCmyk(); // { c: 50, m: 47, y: 0, k: 33, a: 1 }
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```
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</details>
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<details>
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<summary><b><code>.toCmykString()</code></b> (<b>cmyk</b> plugin)</summary>
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Converts a color to color space.
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Converts a color to [CMYK](https://en.wikipedia.org/wiki/CMYK_color_model) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#device-cmyk)
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```js
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import { colord, extend } from "colord";
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import cmykPlugin from "colord/plugins/cmyk";
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extend([cmykPlugin]);
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colord("#99ffff").toCmykString(); // "device-cmyk(40% 0% 0% 0%)"
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colord("#00336680").toCmykString(); // "device-cmyk(100% 50% 0% 60% / 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.toHwb()</code></b> (<b>hwb</b> plugin)</summary>
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Converts a color to [HWB (Hue-Whiteness-Blackness)](https://en.wikipedia.org/wiki/HWB_color_model) color space.
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```js
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import { colord, extend } from "colord";
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import hwbPlugin from "colord/plugins/hwb";
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extend([hwbPlugin]);
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colord("#ffffff").toHwb(); // { h: 0, w: 100, b: 0, a: 1 }
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colord("#555aaa").toHwb(); // { h: 236, w: 33, b: 33, a: 1 }
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```
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</details>
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<details>
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<summary><b><code>.toHwbString()</code></b> (<b>hwb</b> plugin)</summary>
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Converts a color to [HWB (Hue-Whiteness-Blackness)](https://en.wikipedia.org/wiki/HWB_color_model) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#the-hwb-notation).
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```js
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import { colord, extend } from "colord";
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import hwbPlugin from "colord/plugins/hwb";
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extend([hwbPlugin]);
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colord("#999966").toHwbString(); // "hwb(60 40% 40%)"
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colord("#99ffff").toHwbString(); // "hwb(180 60% 0%)"
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colord("#003366").alpha(0.5).toHwbString(); // "hwb(210 0% 60% / 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.toLab()</code></b> (<b>lab</b> plugin)</summary>
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Converts a color to [CIE LAB](https://en.wikipedia.org/wiki/CIELAB_color_space) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
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```js
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import { colord, extend } from "colord";
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import labPlugin from "colord/plugins/lab";
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extend([labPlugin]);
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colord("#ffffff").toLab(); // { l: 100, a: 0, b: 0, alpha: 1 }
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colord("#33221180").toLab(); // { l: 14.89, a: 5.77, b: 14.41, alpha: 0.5 }
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```
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</details>
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<details>
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<summary><b><code>.toLch()</code></b> (<b>lch</b> plugin)</summary>
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Converts a color to [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
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```js
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import { colord, extend } from "colord";
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import lchPlugin from "colord/plugins/lch";
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extend([lchPlugin]);
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colord("#ffffff").toLch(); // { l: 100, c: 0, h: 0, a: 1 }
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colord("#213b0b").toLch(); // { l: 21.85, c: 31.95, h: 127.77, a: 1 }
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```
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</details>
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<details>
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<summary><b><code>.toLchString()</code></b> (<b>lch</b> plugin)</summary>
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Converts a color to [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space and expresses it through the [functional notation](https://www.w3.org/TR/css-color-4/#specifying-lab-lch).
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```js
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import { colord, extend } from "colord";
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import lchPlugin from "colord/plugins/lch";
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extend([lchPlugin]);
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colord("#ffffff").toLchString(); // "lch(100% 0 0)"
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colord("#213b0b").alpha(0.5).toLchString(); // "lch(21.85% 31.95 127.77 / 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.toXyz()</code></b> (<b>xyz</b> plugin)</summary>
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Converts a color to [CIE XYZ](https://www.sttmedia.com/colormodel-xyz) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
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```js
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import { colord, extend } from "colord";
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import xyzPlugin from "colord/plugins/xyz";
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extend([xyzPlugin]);
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colord("#ffffff").toXyz(); // { x: 95.047, y: 100, z: 108.883, a: 1 }
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```
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</details>
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### Color manipulation
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<details>
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<summary><b><code>.alpha(value)</code></b></summary>
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Changes the alpha channel value and returns a new `Colord` instance.
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```js
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colord("rgb(0, 0, 0)").alpha(0.5).toRgbString(); // "rgba(0, 0, 0, 0.5)"
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```
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</details>
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<details>
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<summary><b><code>.invert()</code></b></summary>
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Creates a new `Colord` instance containing an inverted (opposite) version of the color.
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```js
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colord("#ffffff").invert().toHex(); // "#000000"
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colord("#aabbcc").invert().toHex(); // "#554433"
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```
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</details>
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<details>
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<summary><b><code>.saturate(amount = 0.1)</code></b></summary>
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Increases the [HSL saturation](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.
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```js
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colord("#bf4040").saturate(0.25).toHex(); // "#df2020"
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colord("hsl(0, 50%, 50%)").saturate(0.5).toHslString(); // "hsl(0, 100%, 50%)"
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```
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</details>
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<details>
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<summary><b><code>.desaturate(amount = 0.1)</code></b></summary>
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Decreases the [HSL saturation](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.
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```js
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colord("#df2020").saturate(0.25).toHex(); // "#bf4040"
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colord("hsl(0, 100%, 50%)").saturate(0.5).toHslString(); // "hsl(0, 50%, 50%)"
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```
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</details>
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<details>
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<summary><b><code>.grayscale()</code></b></summary>
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Makes a gray color with the same lightness as a source color. Same as calling `desaturate(1)`.
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```js
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colord("#bf4040").grayscale().toHex(); // "#808080"
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colord("hsl(0, 100%, 50%)").grayscale().toHslString(); // "hsl(0, 0%, 50%)"
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```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.lighten(amount = 0.1)</code></b></summary>
|
|
|
|
Increases the [HSL lightness](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.
|
|
|
|
```js
|
|
colord("#000000").lighten(0.5).toHex(); // "#808080"
|
|
colord("#223344").lighten(0.3).toHex(); // "#5580aa"
|
|
colord("hsl(0, 50%, 50%)").lighten(0.5).toHslString(); // "hsl(0, 50%, 100%)"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.darken(amount = 0.1)</code></b></summary>
|
|
|
|
Decreases the [HSL lightness](https://en.wikipedia.org/wiki/HSL_and_HSV) of a color by the given amount.
|
|
|
|
```js
|
|
colord("#ffffff").darken(0.5).toHex(); // "#808080"
|
|
colord("#5580aa").darken(0.3).toHex(); // "#223344"
|
|
colord("hsl(0, 50%, 100%)").lighten(0.5).toHslString(); // "hsl(0, 50%, 50%)"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.hue(value)</code></b></summary>
|
|
|
|
Changes the hue value and returns a new `Colord` instance.
|
|
|
|
```js
|
|
colord("hsl(90, 50%, 50%)").hue(180).toHslString(); // "hsl(180, 50%, 50%)"
|
|
colord("hsl(90, 50%, 50%)").hue(370).toHslString(); // "hsl(10, 50%, 50%)"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.rotate(amount = 15)</code></b></summary>
|
|
|
|
Increases the [HSL](https://en.wikipedia.org/wiki/HSL_and_HSV) hue value of a color by the given amount.
|
|
|
|
```js
|
|
colord("hsl(90, 50%, 50%)").rotate(90).toHslString(); // "hsl(180, 50%, 50%)"
|
|
colord("hsl(90, 50%, 50%)").rotate(-180).toHslString(); // "hsl(270, 50%, 50%)"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.mix(color2, ratio = 0.5)</code></b> (<b>mix</b> plugin)</summary>
|
|
|
|
Produces a mixture of two colors and returns the result of mixing them (new Colord instance).
|
|
|
|
In contrast to other libraries that perform RGB values mixing, Colord mixes colors through [LAB color space](https://en.wikipedia.org/wiki/CIELAB_color_space). This approach produces better results and doesn't have the drawbacks the legacy way has.
|
|
|
|
→ [Online demo](https://3cg7o.csb.app/)
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import mixPlugin from "colord/plugins/mix";
|
|
|
|
extend([mixPlugin]);
|
|
|
|
colord("#ffffff").mix("#000000").toHex(); // "#777777"
|
|
colord("#800080").mix("#dda0dd").toHex(); // "#af5cae"
|
|
colord("#cd853f").mix("#eee8aa", 0.6).toHex(); // "#e3c07e"
|
|
colord("#008080").mix("#808000", 0.35).toHex(); // "#50805d"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.tints(count = 5)</code></b> (<b>mix</b> plugin)</summary>
|
|
|
|
Provides functionality to generate [tints](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import mixPlugin from "colord/plugins/mix";
|
|
|
|
extend([mixPlugin]);
|
|
|
|
const color = colord("#ff0000");
|
|
color.tints(3).map((c) => c.toHex()); // ["#ff0000", "#ff9f80", "#ffffff"];
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.shades(count = 5)</code></b> (<b>mix</b> plugin)</summary>
|
|
|
|
Provides functionality to generate [shades](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import mixPlugin from "colord/plugins/mix";
|
|
|
|
extend([mixPlugin]);
|
|
|
|
const color = colord("#ff0000");
|
|
color.shades(3).map((c) => c.toHex()); // ["#ff0000", "#7a1b0b", "#000000"];
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.tones(count = 5)</code></b> (<b>mix</b> plugin)</summary>
|
|
|
|
Provides functionality to generate [tones](https://en.wikipedia.org/wiki/Tints_and_shades) of a color. Returns an array of `Colord` instances, including the original color.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import mixPlugin from "colord/plugins/mix";
|
|
|
|
extend([mixPlugin]);
|
|
|
|
const color = colord("#ff0000");
|
|
color.tones(3).map((c) => c.toHex()); // ["#ff0000", "#c86147", "#808080"];
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.harmonies(type = "complementary")</code></b> (<b>harmonies</b> plugin)</summary>
|
|
|
|
Provides functionality to generate [harmony colors](<https://en.wikipedia.org/wiki/Harmony_(color)>). Returns an array of `Colord` instances.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import harmoniesPlugin from "colord/plugins/harmonies";
|
|
|
|
extend([harmoniesPlugin]);
|
|
|
|
const color = colord("#ff0000");
|
|
color.harmonies("analogous").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000"]
|
|
color.harmonies("complementary").map((c) => c.toHex()); // ["#ff0000", "#00ffff"]
|
|
color.harmonies("double-split-complementary").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000", "#00ff80", "#0080ff"]
|
|
color.harmonies("rectangle").map((c) => c.toHex()); // ["#ff0000", "#ffff00", "#00ffff", "#0000ff"]
|
|
color.harmonies("split-complementary").map((c) => c.toHex()); // ["#ff0000", "#00ff80", "#0080ff"]
|
|
color.harmonies("tetradic").map((c) => c.toHex()); // ["#ff0000", "#80ff00", "#00ffff", "#8000ff"]
|
|
color.harmonies("triadic").map((c) => c.toHex()); // ["#ff0000", "#00ff00", "#0000ff"]
|
|
```
|
|
|
|
</details>
|
|
|
|
### Color analysis
|
|
|
|
<details>
|
|
<summary><b><code>.isValid()</code></b></summary>
|
|
|
|
Returns a boolean indicating whether or not an input has been parsed successfully.
|
|
Note: If parsing is unsuccessful, Colord defaults to black (does not throws an error).
|
|
|
|
```js
|
|
colord("#ffffff").isValid(); // true
|
|
colord("#wwuutt").isValid(); // false
|
|
colord("abracadabra").isValid(); // false
|
|
colord({ r: 0, g: 0, b: 0 }).isValid(); // true
|
|
colord({ r: 0, g: 0, v: 0 }).isValid(); // false
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.isEqual(color2)</code></b></summary>
|
|
|
|
Determines whether two values are the same color.
|
|
|
|
```js
|
|
colord("#000000").isEqual("rgb(0, 0, 0)"); // true
|
|
colord("#000000").isEqual("rgb(255, 255, 255)"); // false
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.alpha()</code></b></summary>
|
|
|
|
```js
|
|
colord("#ffffff").alpha(); // 1
|
|
colord("rgba(50, 100, 150, 0.5)").alpha(); // 0.5
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.hue()</code></b></summary>
|
|
|
|
```js
|
|
colord("hsl(90, 50%, 50%)").hue(); // 90
|
|
colord("hsl(-10, 50%, 50%)").hue(); // 350
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.brightness()</code></b></summary>
|
|
|
|
Returns the brightness of a color (from 0 to 1). The calculation logic is modified from [Web Content Accessibility Guidelines](https://www.w3.org/TR/AERT/#color-contrast).
|
|
|
|
```js
|
|
colord("#000000").brightness(); // 0
|
|
colord("#808080").brightness(); // 0.5
|
|
colord("#ffffff").brightness(); // 1
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.isLight()</code></b></summary>
|
|
|
|
Same as calling `brightness() >= 0.5`.
|
|
|
|
```js
|
|
colord("#111111").isLight(); // false
|
|
colord("#aabbcc").isLight(); // true
|
|
colord("#ffffff").isLight(); // true
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.isDark()</code></b></summary>
|
|
|
|
Same as calling `brightness() < 0.5`.
|
|
|
|
```js
|
|
colord("#111111").isDark(); // true
|
|
colord("#aabbcc").isDark(); // false
|
|
colord("#ffffff").isDark(); // false
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.luminance()</code></b> (<b>a11y</b> plugin)</summary>
|
|
|
|
Returns the relative luminance of a color, normalized to 0 for darkest black and 1 for lightest white as defined by [WCAG 2.0](https://www.w3.org/TR/WCAG20/#relativeluminancedef).
|
|
|
|
```js
|
|
colord("#000000").luminance(); // 0
|
|
colord("#808080").luminance(); // 0.22
|
|
colord("#ccddee").luminance(); // 0.71
|
|
colord("#ffffff").luminance(); // 1
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.contrast(color2 = "#FFF")</code></b> (<b>a11y</b> plugin)</summary>
|
|
|
|
Calculates a contrast ratio for a color pair. This luminance difference is expressed as a ratio ranging from 1 (e.g. white on white) to 21 (e.g., black on a white). [WCAG Accessibility Level AA requires](https://webaim.org/articles/contrast/) a ratio of at least 4.5 for normal text and 3 for large text.
|
|
|
|
```js
|
|
colord("#000000").contrast(); // 21 (black on white)
|
|
colord("#ffffff").contrast("#000000"); // 21 (white on black)
|
|
colord("#777777").contrast(); // 4.47 (gray on white)
|
|
colord("#ff0000").contrast(); // 3.99 (red on white)
|
|
colord("#0000ff").contrast("#ff000"); // 2.14 (blue on red)
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.isReadable(color2 = "#FFF", options?)</code></b> (<b>a11y</b> plugin)</summary>
|
|
|
|
Checks that a background and text color pair is readable according to [WCAG 2.0 Contrast and Color Requirements](https://webaim.org/articles/contrast/).
|
|
|
|
```js
|
|
colord("#000000").isReadable(); // true (normal black text on white bg conforms to WCAG AA)
|
|
colord("#777777").isReadable(); // false (normal gray text on white bg conforms to WCAG AA)
|
|
colord("#ffffff").isReadable("#000000"); // true (normal white text on black bg conforms to WCAG AA)
|
|
colord("#e60000").isReadable("#ffff47"); // true (normal red text on yellow bg conforms to WCAG AA)
|
|
colord("#e60000").isReadable("#ffff47", { level: "AAA" }); // false (normal red text on yellow bg does not conform to WCAG AAA)
|
|
colord("#e60000").isReadable("#ffff47", { level: "AAA", size: "large" }); // true (large red text on yellow bg conforms to WCAG AAA)
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.delta(color2 = "#FFF")</code></b> (<b>lab</b> plugin)</summary>
|
|
|
|
Calculates the perceived color difference between two colors.
|
|
The difference calculated according to [Delta E2000](https://en.wikipedia.org/wiki/Color_difference#CIEDE2000).
|
|
The return value is `0` if the colors are equal, `1` if they are entirely different.
|
|
|
|
```js
|
|
colord("#3296fa").delta("#197dc8"); // 0.099
|
|
colord("#faf0c8").delta("#ffffff"); // 0.148
|
|
colord("#afafaf").delta("#b4b4b4"); // 0.014
|
|
colord("#000000").delta("#ffffff"); // 1
|
|
```
|
|
|
|
</details>
|
|
|
|
### Color utilities
|
|
|
|
<details>
|
|
<summary><b><code>random()</code></b></summary>
|
|
|
|
Returns a new Colord instance with a random color value inside.
|
|
|
|
```js
|
|
import { random } from "colord";
|
|
|
|
random().toHex(); // "#01c8ec"
|
|
random().alpha(0.5).toRgb(); // { r: 13, g: 237, b: 162, a: 0.5 }
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>.minify(options?)</code></b></summary>
|
|
|
|
Converts a color to its shortest string representation.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import minifyPlugin from "colord/plugins/minify";
|
|
|
|
extend([minifyPlugin]);
|
|
|
|
colord("black").minify(); // "#000"
|
|
colord("#112233").minify(); // "#123"
|
|
colord("darkgray").minify(); // "#a9a9a9"
|
|
colord("rgba(170,170,170,0.4)").minify(); // "hsla(0,0%,67%,.4)"
|
|
colord("rgba(170,170,170,0.4)").minify({ alphaHex: true }); // "#aaa6"
|
|
```
|
|
|
|
| Option | Default | Description |
|
|
| ------------- | ------- | ------------------------------------------------------------ |
|
|
| `hex` | `true` | Enable `#rrggbb` and `#rgb` notations |
|
|
| `alphaHex` | `false` | Enable `#rrggbbaa` and `#rgba` notations |
|
|
| `rgb` | `true` | Enable `rgb()` and `rgba()` functional notations |
|
|
| `hsl` | `true` | Enable `hsl()` and `hsla()` functional notations |
|
|
| `name` | `false` | Enable CSS color keywords. Requires `names` plugin installed |
|
|
| `transparent` | `false` | Enable `"transparent"` color keyword |
|
|
|
|
</details>
|
|
|
|
<div><img src="assets/divider.png" width="838" alt="---" /></div>
|
|
|
|
## Plugins
|
|
|
|
**Colord** has a built-in plugin system that allows new features and functionality to be easily added.
|
|
|
|
<details>
|
|
<summary><b><code>a11y</code> (Accessibility)</b> <i>0.38 KB</i></summary>
|
|
|
|
Adds accessibility and color contrast utilities working according to [Web Content Accessibility Guidelines 2.0](https://www.w3.org/TR/WCAG20/).
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import a11yPlugin from "colord/plugins/a11y";
|
|
|
|
extend([a11yPlugin]);
|
|
|
|
colord("#000000").luminance(); // 0
|
|
colord("#ccddee").luminance(); // 0.71
|
|
colord("#ffffff").luminance(); // 1
|
|
|
|
colord("#000000").contrast(); // 21 (black on white)
|
|
colord("#ffffff").contrast("#000000"); // 21 (white on black)
|
|
colord("#0000ff").contrast("#ff000"); // 2.14 (blue on red)
|
|
|
|
colord("#000000").isReadable(); // true (black on white)
|
|
colord("#ffffff").isReadable("#000000"); // true (white on black)
|
|
colord("#777777").isReadable(); // false (gray on white)
|
|
colord("#e60000").isReadable("#ffff47"); // true (normal red text on yellow bg conforms to WCAG AA)
|
|
colord("#e60000").isReadable("#ffff47", { level: "AAA" }); // false (normal red text on yellow bg does not conform to WCAG AAA)
|
|
colord("#e60000").isReadable("#ffff47", { level: "AAA", size: "large" }); // true (large red text on yellow bg conforms to WCAG AAA)
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>cmyk</code> (CMYK color space)</b> <i>0.6 KB</i></summary>
|
|
|
|
Adds support of [CMYK](https://www.sttmedia.com/colormodel-cmyk) color model.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import cmykPlugin from "colord/plugins/cmyk";
|
|
|
|
extend([cmykPlugin]);
|
|
|
|
colord("#ffffff").toCmyk(); // { c: 0, m: 0, y: 0, k: 0, a: 1 }
|
|
colord("#999966").toCmykString(); // "device-cmyk(0% 0% 33% 40%)"
|
|
colord({ c: 0, m: 0, y: 0, k: 100, a: 1 }).toHex(); // "#000000"
|
|
colord("device-cmyk(0% 61% 72% 0% / 50%)").toHex(); // "#ff634780"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>harmonies</code> (Color harmonies)</b> <i>0.15 KB</i></summary>
|
|
|
|
Provides functionality to generate [harmony colors](<https://en.wikipedia.org/wiki/Harmony_(color)>).
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import harmonies from "colord/plugins/harmonies";
|
|
|
|
extend([harmonies]);
|
|
|
|
const color = colord("#ff0000");
|
|
color.harmonies("analogous").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000"]
|
|
color.harmonies("complementary").map((c) => c.toHex()); // ["#ff0000", "#00ffff"]
|
|
color.harmonies("double-split-complementary").map((c) => c.toHex()); // ["#ff0080", "#ff0000", "#ff8000", "#00ff80", "#0080ff"]
|
|
color.harmonies("rectangle").map((c) => c.toHex()); // ["#ff0000", "#ffff00", "#00ffff", "#0000ff"]
|
|
color.harmonies("split-complementary").map((c) => c.toHex()); // ["#ff0000", "#00ff80", "#0080ff"]
|
|
color.harmonies("tetradic").map((c) => c.toHex()); // ["#ff0000", "#80ff00", "#00ffff", "#8000ff"]
|
|
color.harmonies("triadic").map((c) => c.toHex()); // ["#ff0000", "#00ff00", "#0000ff"]
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>hwb</code> (HWB color model)</b> <i>0.8 KB</i></summary>
|
|
|
|
Adds support of [Hue-Whiteness-Blackness](https://en.wikipedia.org/wiki/HWB_color_model) color model.
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import hwbPlugin from "colord/plugins/hwb";
|
|
|
|
extend([hwbPlugin]);
|
|
|
|
colord("#999966").toHwb(); // { h: 60, w: 40, b: 40, a: 1 }
|
|
colord("#003366").toHwbString(); // "hwb(210 0% 60%)"
|
|
|
|
colord({ h: 60, w: 40, b: 40 }).toHex(); // "#999966"
|
|
colord("hwb(210 0% 60% / 50%)").toHex(); // "#00336680"
|
|
```
|
|
|
|
</details>
|
|
|
|
<details>
|
|
<summary><b><code>lab</code> (CIE LAB color space)</b> <i>1.4 KB</i></summary>
|
|
|
|
Adds support of [CIE LAB](https://en.wikipedia.org/wiki/CIELAB_color_space) color model. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
|
|
|
|
Also plugin provides `.delta` method for [perceived color difference calculations](https://en.wikipedia.org/wiki/Color_difference#CIEDE2000).
|
|
|
|
```js
|
|
import { colord, extend } from "colord";
|
|
import labPlugin from "colord/plugins/lab";
|
|
|
|
extend([labPlugin]);
|
|
|
|
colord({ l: 53.24, a: 80.09, b: 67.2 }).toHex(); // "#ff0000"
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colord("#ffffff").toLab(); // { l: 100, a: 0, b: 0, alpha: 1 }
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colord("#afafaf").delta("#b4b4b4"); // 0.014
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colord("#000000").delta("#ffffff"); // 1
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```
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</details>
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<details>
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<summary><b><code>lch</code> (CIE LCH color space)</b> <i>1.3 KB</i></summary>
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Adds support of [CIE LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
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```js
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import { colord, extend } from "colord";
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import lchPlugin from "colord/plugins/lch";
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extend([lchPlugin]);
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colord({ l: 100, c: 0, h: 0 }).toHex(); // "#ffffff"
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colord("lch(48.25% 30.07 196.38)").toHex(); // "#008080"
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colord("#646464").toLch(); // { l: 42.37, c: 0, h: 0, a: 1 }
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colord("#646464").alpha(0.5).toLchString(); // "lch(42.37% 0 0 / 0.5)"
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```
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</details>
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<details>
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<summary><b><code>minify</code> (Color string minification)</b> <i>0.5 KB</i></summary>
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A plugin adding color string minification utilities.
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```js
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import { colord, extend } from "colord";
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import minifyPlugin from "colord/plugins/minify";
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extend([minifyPlugin]);
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colord("black").minify(); // "#000"
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colord("#112233").minify(); // "#123"
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colord("darkgray").minify(); // "#a9a9a9"
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colord("rgba(170,170,170,0.4)").minify(); // "hsla(0,0%,67%,.4)"
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colord("rgba(170,170,170,0.4)").minify({ alphaHex: true }); // "#aaa6"
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```
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</details>
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<details>
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<summary><b><code>mix</code> (Color mixing)</b> <i>0.96 KB</i></summary>
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A plugin adding color mixing utilities.
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In contrast to other libraries that perform RGB values mixing, Colord mixes colors through [LAB color space](https://en.wikipedia.org/wiki/CIELAB_color_space). This approach produces better results and doesn't have the drawbacks the legacy way has.
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→ [Online demo](https://3cg7o.csb.app/)
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```js
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import { colord, extend } from "colord";
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import mixPlugin from "colord/plugins/mix";
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extend([mixPlugin]);
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colord("#ffffff").mix("#000000").toHex(); // "#777777"
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colord("#800080").mix("#dda0dd").toHex(); // "#af5cae"
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colord("#cd853f").mix("#eee8aa", 0.6).toHex(); // "#e3c07e"
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colord("#008080").mix("#808000", 0.35).toHex(); // "#50805d"
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```
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Also, the plugin provides special mixtures such as [tints, shades, and tones](https://en.wikipedia.org/wiki/Tints_and_shades):
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<div align="center">
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<img src="https://upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Tint-tone-shade.svg/320px-Tint-tone-shade.svg.png" alt="tints, shades, and tones mixtures" />
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</div>
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```js
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const color = colord("#ff0000");
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color.tints(3).map((c) => c.toHex()); // ["#ff0000", "#ff9f80", "#ffffff"];
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color.shades(3).map((c) => c.toHex()); // ["#ff0000", "#7a1b0b", "#000000"];
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color.tones(3).map((c) => c.toHex()); // ["#ff0000", "#c86147", "#808080"];
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```
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</details>
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<details>
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<summary><b><code>names</code> (CSS color keywords)</b> <i>1.45 KB</i></summary>
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Provides options to convert a color into a [CSS color keyword](https://developer.mozilla.org/en-US/docs/Web/CSS/color_value#color_keywords) and vice versa.
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```js
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import { colord, extend } from "colord";
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import namesPlugin from "colord/plugins/names";
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extend([namesPlugin]);
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colord("tomato").toHex(); // "#ff6347"
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colord("#00ffff").toName(); // "cyan"
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colord("rgba(0, 0, 0, 0)").toName(); // "transparent"
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colord("#fe0000").toName(); // undefined (the color is not specified in CSS specs)
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colord("#fe0000").toName({ closest: true }); // "red" (closest color)
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```
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</details>
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<details>
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<summary><b><code>xyz</code> (CIE XYZ color space)</b> <i>0.7 KB</i></summary>
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Adds support of [CIE XYZ](https://www.sttmedia.com/colormodel-xyz) color model. The conversion logic is ported from [CSS Color Module Level 4 Specification](https://www.w3.org/TR/css-color-4/#color-conversion-code).
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```js
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import { colord, extend } from "colord";
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import xyzPlugin from "colord/plugins/xyz";
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extend([xyzPlugin]);
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colord("#ffffff").toXyz(); // { x: 95.047, y: 100, z: 108.883, a: 1 }
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colord({ x: 0, y: 0, z: 0 }).toHex(); // "#000000"
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```
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</details>
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## Types
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**Colord** is written in strict TypeScript and ships with types in the library itself — no need for any other install. We provide everything you need in one tiny package.
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While not only typing its own functions and variables, **Colord** can also help you type yours. Depending on the color space you are using, you can also import and use the type that is associated with it.
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```ts
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import { RgbColor, RgbaColor, HslColor, HslaColor, HsvColor, HsvaColor } from "colord";
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const foo: HslColor = { h: 0, s: 0, l: 0 };
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const bar: RgbColor = { r: 0, g: 0, v: 0 }; // ERROR
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```
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<div><img src="assets/divider.png" width="838" alt="---" /></div>
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## Projects using Colord
|
|
|
|
- [cssnano](https://github.com/cssnano/cssnano) — the most popular CSS minification tool
|
|
- [Resume.io](https://resume.io/) — online resume builder with over 12,000,000 users worldwide
|
|
- [Leva](https://github.com/pmndrs/leva) — open source extensible GUI panel made for React
|
|
- [Qui Max](https://github.com/Qvant-lab/qui-max) — Vue.js design system and component library
|
|
- and [thousands more](https://github.com/omgovich/colord/network/dependents)...
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|
<div><img src="assets/divider.png" width="838" alt="---" /></div>
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|
## Roadmap
|
|
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|
- [x] Parse and convert Hex, RGB(A), HSL(A), HSV(A)
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- [x] Saturate, desaturate, grayscale
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- [x] Trim an input value
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- [x] Clamp input numbers to resolve edge cases (e.g. `rgb(256, -1, 999, 2)`)
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- [x] `brightness`, `isDark`, `isLight`
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- [x] Set and get `alpha`
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- [x] Plugin API
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- [x] 4 and 8 digit Hex
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- [x] `lighten`, `darken`
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- [x] `invert`
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- [x] CSS color names (via plugin)
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- [x] A11y and contrast utils (via plugin)
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|
- [x] XYZ color space (via plugin)
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|
- [x] [HWB](https://drafts.csswg.org/css-color/#the-hwb-notation) color space (via plugin)
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|
- [x] [LAB](https://www.w3.org/TR/css-color-4/#resolving-lab-lch-values) color space (via plugin)
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|
- [x] [LCH](https://lea.verou.me/2020/04/lch-colors-in-css-what-why-and-how/) color space (via plugin)
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|
- [x] Mix colors (via plugin)
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|
- [x] CMYK color space (via plugin)
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