The three primary colors are red, yellow and blue. These colors are considered to be foundation colors because they are used to create all other colors. By combining two of the primary colors, three secondary colors are formed. They are orange, green and violet. The six tertiary colors are made by combining a primary and an adjacent secondary color.
Colors are also divided into cool and warm categories.
The cool colors are green, blue and violet. Warm colors are red, orange and yellow. A tint of a color is made by adding white. A shade is made by adding black. Analogous - This scheme uses adjacent hues.