The color wheel is a tool used in color theory that helps us understand the relationships between individual colors in order to use them well. If you don't know about the color wheel ... well, you might end up making ugly stuff. \"Colors opposite each other on the color wheel — these are also called complements — have an especially strong relationship,\" says Cooperman. Here's some terminology that helps artists and designers talk to each other about color:AdvertisementHueHue is just the color name: red, yellow, green, blue, etc. Learn more about color theory in \"Secret Language of Color: Science, Nature, History, Culture, Beauty of Red, Orange, Yellow, Green, Blue, & Violet\" by Joann Eckstut and Arielle Eckstut.