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A-94 Desktop Color Primer
ES3640e MFP Color Reference Guide - 94
Subtractive (CMY and CMYK) color
The subtractive color model is the basis for color printing, color
photographic prints, and transparencies. While the additive color
model simulates the visible spectrum of color by adding light of
three primary hues, the subtractive color model starts with a
“white” or neutral light source containing light of many
wavelengths. Inks, toners, or other
selectively absorb (subtract) certain wavelengths of light that
otherwise would be reflected or transmitted by the media in use.
The
subtractive primaries
are cyan, magenta, and yellow; they
absorb red, green, and blue light, respectively (as shown in the
following figure). Combining any two subtractive primaries creates
a new color that is relatively pure or saturated. For example, you
can make red by combining magenta and yellow, which absorb
green and blue light, respectively. White occurs when no colorant
is applied. In theory, combining all three subtractive primaries
yields black, but due to deficiencies of cyan, magenta, and yellow
colorants, combining these three primaries actually yields a
muddy brown. Black colorant is added to compensate for the
deficiencies of cyan, magenta, and yellow colorants.
Consequently, color printing uses four
:
C
yan,
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