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Image from http://www.artyfactory.com/color_theory/images/colours/colour_wheel.gif.

The Color Wheel depicting HUES (= any color of the color spectrum) - from Color Theory Terms Part 1

HUES are the 12 purest brightest colors forming the full spectrum ~ 3 Primary Colors; 3 Secondary Colors; 6 Tertiary Colors. A TINT (sometimes called a pastel) is any color with white added. A SHADE is any color with black added. A TONE is created by adding gray. - color wheel

HUES are the 12 purest & brightest colors with Primary Colors, Secondary Colors, and Tertiary Colors. TINTS (aka Pastel) is any color with white added. SHADE: any color with black added.