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parse-css-color

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parse-css-color

parse a css color string

  • 0.2.1
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parse-css-color

NPM Version License Known Vulnerabilities Libraries.io dependency status for latest release Total alerts Language grade: JavaScript

Parse a CSS color string.

Supports

  • <color value>
    • Hexadecimal RGB value: #RGB #RRGGBB
    • #RGBA #RRGGBBAA (4 and 8-digit hexadecimal RGBA notation)
    • RGB/A color module level 3 and 4 (number, percentage)
    • HSL/A color module level 3 and 4 (number, deg, rad, turn)
  • <color keyword>
  • transparent
    • Shorthand for transparent black, rgba(0,0,0,0).

Does not support

  • currentColor
  • inherit

Installation

NPM

npm i parse-css-color

Or as a <script> tag from a CDN as parseCssColor:

Unpkg CDN

<script src="https://unpkg.com/parse-css-color"></script>

jsDelivr CDN

<script src="https://cdn.jsdelivr.net/npm/parse-css-color"></script>

Usage

import parse from 'parse-css-color'

// HEX/A
parse('#00f')
//> { type: 'rgb', values: [0, 0, 255], alpha: 1 }
parse('#00f8')
//> { type: 'rgb', values: [0, 0, 255], alpha: 0.5333333333333333 }
parse('#0000FF80')
//> { type: 'rgb', values: [0, 0, 255], alpha: 0.5019607843137255 }
parse('#00g')
//> null

// HSL/A
parse('hsl(270deg 60% 70% / 25%)')
//> { type: 'hsl', values: [270, 60, 70], alpha: 0.25 }
parse('hsl(4.71239rad 260% -70% / 0.5)') // clipped to
//> { type: 'hsl', values: [270, 100, 0], alpha: 0.5 }
parse('hsla(.75turn, 60%, 70%, 50%)')
//> { type: 'hsl', values: [270, 60, 70], alpha: 0.5 }
parse('hsla(100deg 0 0 / 0)') // error: missing percetanges
//> null

// RGB/A
parse('rgb(255 0 0 / 0.5)')
//> { type: 'rgb', values: [255, 0, 0], alpha: 0.5 }
parse('rgb(500 -100 0 / 200%)') // clipped to
//> { type: 'rgb', values: [255, 0, 0], alpha: 1 }
parse('rgba(255, 0, 255, 20%)')
//> { type: 'rgb', values: [255, 0, 255], alpha: 0.2 }
parse('rgba(100% 255 100% / 0)') // error: mixed percetange with integer
//> null

See tests for more cases.

Dev

npm install   # install dependencies
npm test      # run the tests (append `-- -w`) to watch
npm run dev   # watch for changes and rebuild
  • mix-css-color - Mix two CSS colors together in variable proportion. Opacity is included in the calculations.
  • values.js - Get the tints and shades of a CSS color.

License

MIT © Noel Delgado

Keywords

FAQs

Package last updated on 07 Apr 2022

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