Sign Up for Free

RunKit +

Try any Node.js package right in your browser

This is a playground to test code. It runs a full Node.js environment and already has all of npm’s 1,000,000+ packages pre-installed, including rgb2hex with all npm packages installed. Try it out:

var rgb2hex = require("rgb2hex")

This service is provided by RunKit and is not affiliated with npm, Inc or the package authors.

rgb2hex v0.2.0

lightweight rgb/rgba to hex parser

rgb2hex Build Status Coverage Status Known Vulnerabilities

Parse any rgb or rgba string into a hex color. Lightweight library, no dependencies!


via NPM:

$ npm install rgb2hex

via Bower

$ bower install rgb2hex


Include rgb2hex.js in your web app, by loading it as usual:

<script src="rgb2hex.js"></script>

Using NodeJS

var rgb2hex = require('rgb2hex');

 * returns:
 * {
 *    hex: '#d22bff',
 *    alpha: 1
 * }

 * returns:
 * {
 *    hex: '#d22bff',
 *    alpha: 0.67
 * }

Using RequireJS

rgb2hex can be also loaded with AMD:

require(['rgb2hex'], function (rgb2hex) {
    // ...


Please fork, add specs, and send pull requests! In lieu of a formal styleguide, take care to maintain the existing coding style.

Release History

  • 2013-04-22   v0.1.0   first working version
  • 2018-05-24   v0.1.1   updated dependencies switch test framework to jest
  • 2018-06-13   v0.1.2   Fixes uncontrolled resource consumption vulnerability referenced in #1. (ref1, ref2)
  • 2018-06-13   v0.1.3   allow semicolon at the end of an rgb string
  • 2018-06-19   v0.1.4   ignore text before or after the color
  • 2018-07-04   v0.1.5   Fix stripping of color and regexp
  • 2018-07-05   v0.1.6   Prevent Regular Expression Denial of Service attacks
  • 2018-07-05   v0.1.7   Minor coverage fix
  • 2018-07-05   v0.1.8   Better handle alpha values
  • 2018-07-18   v0.1.9   Support transparent colors
  • 2019-11-11   v0.1.10  Support multiple decimal places (#20)
RunKit is a free, in-browser JavaScript dev environment for prototyping Node.js code, with every npm package installed. Sign up to share your code.
Sign Up for Free