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HEX to RGB Converter

/ Published in: JavaScript
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Converts and returns the RGB equivalent of a HEX value. The RGB values are returned as an object, with the members "red", "green" and "blue". See the example in code snippet if you do not know how to use the function.

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  1. function hex2rgb(hex) {
  2.   if (hex[0]=="#") hex=hex.substr(1);
  3.   if (hex.length==3) {
  4.     var temp=hex; hex='';
  5.     temp = /^([a-f0-9])([a-f0-9])([a-f0-9])$/i.exec(temp).slice(1);
  6.     for (var i=0;i<3;i++) hex+=temp[i]+temp[i];
  7.   }
  8.   var triplets = /^([a-f0-9]{2})([a-f0-9]{2})([a-f0-9]{2})$/i.exec(hex).slice(1);
  9.   return {
  10.     red:   parseInt(triplets[0],16),
  11.     green: parseInt(triplets[1],16),
  12.     blue:  parseInt(triplets[2],16)
  13.   }
  14. }
  15.  
  16. // Example
  17. var hex = "#fA0";
  18. var rgb = hex2rgb(hex);
  19. document.write("<pre>"+hex+" \u2192 rgb("+rgb.red+","+rgb.green+","+rgb.blue+")</pre>");

URL: http://sverri.tumblr.com/post/865857181/javascript-hex-to-rgb-converter

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