Grabs the dominant color or a representative color palette from an image. Uses PHP and GD, Imagick or Gmagick.
A PHP 7 library for working with RGB, HSL, and Hexadecimal colors. Create schemes, modify specific color properties, export CMYK, and make color suggestions quickly and easily with this stand-alone library.
Color utility class for PHP 5.3 that allows for easy conversion between RGB, HSV, XYZ, and Lab colorspaces, as well as color comparison
Use your favorite WordPress Dashboard color scheme on the front end admin bar.
A plugin to generate WordPress admin color schemes
A PHP library for color manipulation in themes and plugins
A little library to deal with color conversions