jlong

// Brightness math based on:
//   http://www.nbdtech.com/Blog/archive/2008/04/27/Calculating-the-Perceived-Brightness-of-a-Color.aspx

$red-magic-number: 241;
$green-magic-number: 691;
$blue-magic-number: 68;
$brightness-divisor: $red-magic-number + $green-magic-number + $blue-magic-number;

@function brightness($color) {
  // Extract color components