The CIE 1931 color space chromaticity diagram rendered in terms of the colors of lower saturation and value than those displayed in the diagram above that can be produced by pigments, such as those used in printing.

Adding a specific mapping function between a color model and a reference color space establishes within the reference color space a definite "footprint", known as a gamut, and for a given color model, this defines a color space.

Color models can be based on physics or human perception. Physical descriptions of color can be additive (describes mixing of light, RGB) or subtractive (describes mixing of pigment or removal of light, CMYK). Descriptions based on human perception are …

The spectral colors are distributed around the edge of the "color space" as shown, and that outline includes all of the perceived hues and provides a framework for investigating color. The …

Read this page to learn about the different color spaces including Hunter Lab color space, XYZ Chromaticity Coordinates, L*a*b* color space, and more.

In this diagram, the a * and b * indicate color directions: +a * is the red direction, -a * is the green direction, +b * is the yellow direction, and -b * is the blue direction.

From the CIE 1931 diagram we have converted the wavelength of each color (in steps of 0.1nm) to the RGB color space and stated the specific wavelength for each 5nm.

Mar 15, 2009 · Any specific method for associating tristimulus values with each color is called a color space. CIE XYZ, one of many such spaces, is special because it is based on direct measurements of human visual perception, and serves as the basis from which many other color spaces are defined.

The CIELAB (or CIE L* a* b*) color space diagram, representing the quantitative relationship of colors on three axes: L* value indicates lightness, and a* and b* are chromaticity coordinates.

Color spaces, defined by the CIE, allow users to communicate object color in numerical terms to help identify inconsistencies and evaluate color.