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Colors

primary and secondary colors1. Primary colors: red, blue, and yellow

2. Secondary Colors: mix equal amounts of any two primary colors

red + yellow = orange
blue + yellow = green
blue + red = purple

3. Tertiary colors: mix together a primary color with an equal amount of the secondary color next to it
complementary colorsComplementary (互補的) colors: two colors that are opposite each other on the color wheel

Such as: red for green; orange for blue

When complementary colors are mixed together, they subdue or neutralize each other's intensity.

Color ValueValue describes the lightness or darkness of a color.
hue
A hue is the pure color. Tints and shades are values of a color.