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'''Color theory''' is an area of study pertaining to artistic [[color]]. It sets up groups of colors that are frequently used in art to create certain effects and harmony, and it is mostly based on the color wheel, a device originally invented by Sir Isaac Newton. Today the color wheel is usually presented as follows.
'''Color theory''' is an area of study pertaining to artistic [[color]]. It sets up groups of colors that are frequently used in art to create certain effects and harmony, and it is mostly based on the color wheel, a device originally invented by Sir Isaac Newton. Today the color wheel is usually presented as follows.
[[Image:http://i80.photobucket.com/albums/j165/Phyllie06/color-wheel.gif]]
'''Primary colors''' are the three colors that cannot be derived from any other colors, yet can be mixed to form every color: red, blue, and yellow. They are spaced 120 degrees apart on the color wheel.
'''Primary colors''' are the three colors that cannot be derived from any other colors, yet can be mixed to form every color: red, blue, and yellow. They are spaced 120 degrees apart on the color wheel.
'''A triad''' is a group of three colors spaced 120 degrees apart, such as green, purple, and orange.
'''A triad''' is a group of three colors spaced 120 degrees apart, such as green, purple, and orange.
'''Chromatic gray''' is gray, created not by mixing black and white but by mixing two complements (i.e. red and green.) It appears to be a less dull gray than the one created by mixing black and white.