As mentioned earlier, if you're picking a color scheme for your project, you usually begin by choosing a main (or base) color. This main color can come from a piece of art that you're starting with (like a logo or photo) or it can be a color that you want to build your design around. Once you know the main color, you can use a few simple rules to find other colors that go well with it. In this section, you'll learn how to use a color wheel to pick a color scheme based on four popular color scheme harmonies (color combinations proven by color experts to go well together). But don't worry: You'll also learn where to find tools to automate this process in case picking colors manually isn't your cup of tea.