Converts an RGB color value to HSL. Conversion formula adapted from http://en.wikipedia.org/wiki/HSL_color_space.
Assumes r, g, and b are contained in the set [0, 255] and returns h, s, and l in the set [0, 1].
The red color value.
The green color value.
The blue color value.
Converts an RGB color value to HSL. Conversion formula adapted from http://en.wikipedia.org/wiki/HSL_color_space.
Assumes r, g, and b are contained in the set [0, 255] and returns h, s, and l in the set [0, 1].