The L* (perceptual brightness) value of this color in the range [0,100].
The C* (chroma or relative saturation) value of this color. Forms a polar coordinate pair with h° to represent the four unique colors of human vision (red, green, blue, and yellow).
The h° (hue angle) value of this color. Forms a polar coordinate pair with C* to represent the four unique colors of human vision (red, green, blue, and yellow).
A CIELCh (CIEHLC) representation of a color. Intended to be a perceptually uniform space. Colors are defined relative to a standard observer.
See