primary colors are rgb-green-blue, that is, red-green-blue. a mixture of 2 of these colors is the opposite of one that is not in the mixture. an equal mixture of all 3 is white. red+green=yellow reverse blue (warm-cold) red+blue=purple reverse green green+blue=turquoise reverse red http://1.bp.blogspot.com/…s1600/purecolorcircle.jpg each color is the opposite of its opposite. this is a mix of it all http://2.bp.blogspot.com/…rsq/s1600/rgb picture.gif
well done colors that are often used together in themes.
colors that give black or gray tones when mixed.
we can say contrast or contrast.
black and white