Colors
Color Space. The three essential parameters hue, saturation, and brightness. A wide range of colors can be created by the subtractive primary colors of pigment ( cyan (C), magenta (M), yellow (Y), and black (K)). Those colors then define a specific color space. To create a three-dimensional representation of a color space, we can assign the amount of magenta color to the representation's X axis , the amount of cyan to its Y axis, and the amount of yellow to its Z axis. The resulting 3-D space provides a unique position for every possible color that can be created by combining those three pigments. Lab Color Space. A color-opponent space with dimension L for lightness and a and b for the color-opponent dimensions, based on nonlinearly compressed CIE XYZ color space coordinates. The dimensions of the Hunter 1948 L , a , b color space are L , a , and b . However, Lab is now more often used as an informal abbreviation