This week at the grocery I saw these bright and fun flowers that I couldn't resist, how can you say no to bright yellow daisies with green centers and limey green and red-violet mums.This is a great example of a split complimentary color scheme; red violet, yellow and green.
Split compliments consist of a main color and the two colors on each side of its complimentary (opposite) color on the color wheel.
Last night I looked out the window and saw this gorgeous sunset, predominantly in yellow, red (pink) and blue, these three colors make up the primary color triad on the color wheel. It is with these three colors in different combinations that create all the other colors. You can see examples of that here where the pink and blue have combined in the highest clouds are lovely purples and where the yellow and pink come together close to the horizon you see peachy and golden oranges.
Understanding the basics allows for endless possibilities. If you are interested in learning more, join the next online color theory class.