Color in art is based on color theory, which is composed of three basic parts: the color wheel hue, color value and color schemes. Color is the element in art of reflected light that is interpreted by the eye.
The color wheel provides a diagram of hues as perceived by the eye. The most basic color wheel has the three hues yellow, red and blue. These are primary colors because no other colors can be mixed to create them. Other colors are added to the color wheel by mixing the primary colors and then mixing the mixtures and so on.
Color value refers to darkness or lightness of a color and is affected by adding black or white. Adding black produces shades. Adding white produces tints.
Color schemes are combinations of colors. The simplest are monochromatic schemes of one color and its shades and tints. Other color schemes include complementary colors that are directly across from each other on the color wheel and analogous colors that are side-by-side on the color wheel.