CoMa – PHP Color Math Library

Php library to convert between sRGB, XYZ, and Lab color spaces, and calculate various color distance metrics (delta E). Currently CIE76 and CIE94 are implemented, but I plan to implement more.

useDanmichaelo\Coma\ColorDistance,
Danmichaelo\Coma\sRGB;
$color1 = newsRGB(1, 5, 250);
$color2 = newsRGB(0, 0, 208);
$cd = newColorDistance;
$cie94 = $cd->cie94($color1, $color2);
echo'The CIE94 ∆E is ' . $cie94 . ' between ' . $color1->toHex() . ' and ' . $color2->toHex() . '.';