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The Properties of Color
CIE color model
In the 1930s, the Commission Internationale de l'Eclairage (CIE)
defined a standard
mathematical terms, to help in the communication of color
information. This color space is based on research on the nature of
color perception.
By mixing any two spectral colors in different proportions, we can
create all the colors found between them. For example, it is possible
to create the same gray by mixing blue-green and red light or by
mixing yellow-green and blue-violet light. This is possible because of
a phenomenon peculiar to color vision called
does not distinguish individual wavelengths of light. Therefore,
different combinations of spectral light can produce the same
perceived color.
Hue, saturation, and brightness
A color can be described in terms of three varying characteristics:
• Hue, or tint (the qualitative aspect of a color-red, green, or
orange)
• Saturation, or the purity of the color
• Brightness, or relative position between white and black.
Many computer applications include dialog boxes in which you
choose colors by manipulating hue, saturation, and brightness. For
example, Photoshop uses a square Color Picker which can be
reconfigured according to your preference.
5-3
, a way of defining colors in
color space
. The eye
metamerism
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Troubleshooting
