Answer:
Color harmony is based on the color wheel, a circular diagram of colors. The primary colors (red, blue, and yellow) are set at points equidistant from each other. The secondary colors (purple, green, and orange, made by mixing the primary colors) are located halfway between the relevant primary colors. The tertiary colors are blends of one primary and one secondary color, and fill in the remaining spaces. Theoretically, every possible color could be included in the color wheel, although commercially available wheels typically include approximately 12 colors.
Step-by-step explanation:
I think its basically how colors work together and like opposites?
Hope this helps a bit, Bad-At-Math-99