What are color schemes and how can they be used to create desired effects?

Color schemes are intentional groupings of colors that work together harmoniously to create specific visual and emotional effects. There are ten basic color schemes: achromatic (using only black, white and gray), analogous (using three consecutive colors on the color wheel), clash (combining a color with a hue to the left or right of it’s complement), complementary (using colors opposite each other on the color wheel), monochromatic (using one hue in combination with its tints and shades), neutral (using a hue diminished with the addition of its complement or black)