Pure hues are high-intensity colors. Dull hues are low-intensity colors. Color wheel . A color wheel is the spectrum bent into a circle. It is a useful tool for organizing colors.
Primary colors are hues which can be mixed to create all other colors.
Secondary colors are the hues between the primary hues on the color wheel. To get orange, you mix equal parts of red and yellow. To get Violet, you mix equal parts of red and blue. To get green, you mix equal parts of blue and yellow. Complimentary colors .