Blue and orange are considered complementary colors because they are opposite each other on the color wheel. When placed next to each other, complementary colors create the strongest contrast.
When you add neutrals and play with the shades being used, complementary colors can result in a number of unique color schemes. Try using one of the five options above on your next adult coloring book page!
[Photo courtesy of Adam Polselli via Flickr.]
Thanks for sharing! This chart will really help in our color schemes.