Tones – Pure color + Gray
Tones are created by adding gray to any hue. The tone created depends on the amount of black and white used in the gray and the amount of gray added (keep in mind there are a lot of shades of gray).
This can create tones that are lighter or darker than the original hue, depending on the exact color and the type of gray you’re mixing it with.
Most of the colors we see in the real world are tones of a pure color. The colors on the color wheel are much brighter and more saturated than we’re used to seeing in the real world.