ooooh ouch that one is still a struggle even for me. My best advice would be to first study a color wheel or color triangle. I prefer the wheel just because that's how my brain works. The color device sets it up so that the color opposite of one works well together. Complimentary colors [spoiler][quote] Primary colors are those that make every other color in the spectrum: red, yellow, and blue. Secondary colors are those that are equal combinations of two primary colors: purple (red and blue), green (blue and yellow), and orange (yellow and red). Tertiary colors are made by mixing a primary and its adjacent secondary color in equal proportions (red-orange, yellow-orange, yellow-green, blue-green, blue-purple, and red-purple). According to color theory, a good combination is one that uses two colors opposite each other on the color wheel, three colors equally spaced around the color wheel, or two pairs of colors (a total of four) opposite each other.[/quote][/spoiler] another good way is using color palettes [url=http://www.colourlovers.com/palettes]Good site[/url] for palettes. Use these to pick what colors go best and only use those.