10. The colors opposite each other on the color wheel. Mixing a hue with its complement dulls the hues or lowers its intensity.
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15. Split complement: the combination of one hue plus the hues on each side of its complement. Easier to work with than a straight complementary scheme because it offers more variety
16. ANALOGOUS Colors that sit side by side on the color wheel and have a common hue. An analogous colors scheme creates a design that ties one shape to the next through a common hue.