1. primary colors , secondary colors and teriary colors
2. primary colors- red yellow blue secondary colors- orange green and violet intermediate colors - red-orange , yellow-orange , yellow-green , blue-green , blue-violet, red-violet
4. color context or the makeup of colors are next to each other , makes a dramatic difference in how color is perceived, contrast simultaneous contrast is the technical name of the visual effect if the interaction of the two colors
