The L* (perceptual brightness) value of this color in the range [0,100].
The a* value of this color. Forms a Cartesian coordinate pair with b* to represent the four unique colors of human vision (red, green, blue, and yellow).
The b* value of this color. Forms a Cartesian coordinate pair with a* to represent the four unique colors of human vision (red, green, blue, and yellow).
A CIELAB (Lab*) representation of a color. Intended to be a perceptually uniform space. Derived from CIEXYZ. Colors are defined relative to a standard observer. Compared to CIELUV, CIELAB is considered better for reflective surface colors.
See
CIELAB color space