how the human visual system functions is essential to designing
effective visual displays. Such understanding provides the
basis for color selection, text and item size determination,
and coding methods. It also helps in the design of displays
for all users, including those with color vision deficiencies
and acuity problems.
using CRT, LCD, or plasma technology, all computer monitor
color generation is based on the mixing of the three primaries:
red, green, blue. This mimics the color perception of the
human visual system which is based on red, green, and blue
color receptors. While color can be a powerful means to code
information on a display and enhance ease and efficiency of
use, luminance contrast is more important than color in determining
text, symbol, or item discriminability.
CIELUV color space can be used to calculate the perceptual
distance between colors. The greater this distance, the greater
the likelihood that the colors can be easily differentiated
on the display. CIELUV can be used to calculate the "gamut"
or range of colors that can be produced by a particular
monitor, so that color choices can be made. CIELUV is useful
in defining other color and luminance properties pertinent
to color use in display design and to match colors across
displays. CIE color space concepts and calculations should
be mastered by anyone specifying colors for an electronic