t the left is a CIE Chromacity Diagram which
maps all the possible Hues and their saturations. The horseshoe-shaped boundary
represents the positions of the colors that have the highest posssible saturations.
These are the spectrum colors. The colored area represents the limits of
saturation possible with a modern set of printing inks.
The straight line that closes this horseshoe
represents the maximum saturation of the Magentas and Purples that do not occur
in the spectrum. Their Hues are expressed in terms of the wavelengths of
Green light to which they are complimentary.
