User's Manual

Table Of Contents
73
Lab Color Space
The LAB color space displays the colors in a sphere with three axes:
the L-axis
the a-axis
the b-axis
The L-axis ranges from 0 to 100 and controls the luminance.
A and b-axes determine the color. They range from -127 to 127.
The following diagram shows how the axes are positioned.
The LAB model is built on the insight that the human eye can see some colors distinctly, while it can perceive
others only vaguely.