colorsys

Colorsys is a simple javascript color conversion library that allows bidirectional color conversion. Lightweight, immutable. With support for RGB, HEX, HSV, HSL and CMYK and CSS strings.

install

With npm

npm install colorsys

Load on browser or copy paste into your code

<script src="https://unpkg.com/colorsys@1.0.11/colorsys.js"></script>

example

var colorsys = require('colorsys')
const hsl = colorsys.parseCss('hsl(0, 0%, 100%)') //  { h: 0, s: 0, l: 100 }
colorsys.hsl2Hex(hsl) // '#ffffff'
const hsv = colorsys.rgb_to_hsv({r: 255, g: 255, b: 255 })
colorsys.stringify(hsv) // 'hsv(0, 0%, 100%)'
// Parsing an hex string will result in a RGB object!
colorsys.parseCss('#ff00ff') // { r: 255, g: 0, b: 255 }

For more examples please visit the tests

API

For any method the input arguments can be an object (r: 50, g: 100, b: 0} or a set of integers 50, 100, 0. You have aliases in both snake_case (hex_to_hsl) or rgb2Hex, hsv2Rgb form.

colorsys.parseCss(color: string) will parse a color string in an object with the same keys.
colorsys.stringify(color: Object) will output a valid css string.
colorsys.rgb_to_hsl({ r: 255, g: 255, b: 255 }) => { h: 0 , s: 0 , l: 100 }
colorsys.rgb_to_hsv({ r: 255, g: 255, b: 255 }) => { h: 0 , s: 0 , v: 100 }

Try with any combination. Look at the source to double check!

colorsys.hslToRgb
colorsys.hsvToRgb
colorsys.rgbToHex
colorsys.hexToRgb
colorsys.hsvToHex
colorsys.hexToHsv
colorsys.hslToHex
colorsys.hexToHsl
colorsys.rgb2cmyk
colorsys.cmyk2rgb

Other methods:

Generate a random hex color: colorsys.random()
Rotate a color hue: colorsys.rotateHue(120, 120) will output 240. You can also use HSL or HSV objects as rotateHue(hsv, 120) will output an object containing {h: 240}.

There are some formats missing like YIQ, HWB, ansii and ansi16. Please help us to complete this library making a pull request.