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Paint colors
This is the system that you probably learned in grade school, using
poster paints or crayons. It is included here for the sake of comparison,
since many people will remember it and perhaps wonder why the colors we
use on computers are different. It is still valid for paints, although
artist's colors generally are selected from
color guides, using generic or proprietary names such as “cadmium red,”
“burnt umber,” “thalo blue,” and so on.
These colors could be described (approximately) by most of the systems that follow (HSB,
RGB, etc.), but they usually aren’t.
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Primary colors:
red, yellow, blue
Secondary colors:
orange = red + yellow,
green = yellow + blue,
purple = blue + red.
All colors:
red + yellow + blue = muddy brown.
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Black and white are separate colors,
which may be mixed with others to make lighter or darker shades or tones.
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