Skip to content

Instantly share code, notes, and snippets.

@dboune

dboune/colormeter.js

Forked from krypton/colormeter.js
Last active August 29, 2015 14:18
Show Gist options

  • Select an option

    Learn more about clone URLs
  • Save dboune/55ef5d9b6df272ed123e to your computer and use it in GitHub Desktop.

Select an option

Learn more about clone URLs
Save dboune/55ef5d9b6df272ed123e to your computer and use it in GitHub Desktop.
Download ZIP
Raw
colormeter.js
function color_meter(cwith, ccolor, precision) {
if (!cwith || !ccolor) return;
var _cwith = (cwith.charAt(0)=="#") ? cwith.substring(1,7) : cwith;
var _ccolor = (ccolor.charAt(0)=="#") ? ccolor.substring(1,7) : ccolor;
var _r = parseInt(_cwith.substring(0,2), 16);
var _g = parseInt(_cwith.substring(2,4), 16);
var _b = parseInt(_cwith.substring(4,6), 16);
var __r = parseInt(_ccolor.substring(0,2), 16);
var __g = parseInt(_ccolor.substring(2,4), 16);
var __b = parseInt(_ccolor.substring(4,6), 16);
var p1 = (_r / 255) * 100;
var p2 = (_g / 255) * 100;
var p3 = (_b / 255) * 100;
var perc1 = (p1 + p2 + p3) / 3;
var p1 = (__r / 255) * 100;
var p2 = (__g / 255) * 100;
var p3 = (__b / 255) * 100;
var perc2 = (p1 + p2 + p3) / 3;
return Math.abs(perc1 - perc2).toPrecision(precision);
}
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment