Ricoh AP204 Operator's Manual page 8

Color Guide
The colors of the RGB color model can be mixed to produce the cyan, magenta,
and yellow of the CMY color model and vice versa. Two colors of one model are
mixed to produce the color of the other model (mixing blue and green produces
cyan, for example). The remaining color is the compliment of the color produced
(red in this example). Complimentary colors are: red and cyan, green and ma-
genta, blue and yellow.
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