A tone of a hue can be either higher or lower or equal in value to the pure hue. The lightness or darkness of the added gray will determine the value. The resulting color will be more dull or neutral. Tones can create a foggy, misty or wintry effect. Two complements can be mixed to create a gray known as a neutral-gray.
Colors created by mixing complements are often rich, subtle and sophisticated.
Adding white to these mixtures often produces complex colors. Color Models Describing Saturation Johannes Itten created a color star that is an extension of his 12-part color wheel. The star extends the color wheel inward by adding white or creating tints and extends the wheel outward by adding black or creating shades. Itten's Color Wheel Albert Munsell's Color Tree combines the concepts of hue, saturation and value into a three dimensional tree. The trunk is the neutral from white to black.