Answer:it sounds like you’re looking for a total of 4 colors. Two sets of pairs. You can choose any of the following sets
Blue and Orange
Violet and Yellow
Red and Green
Explanation:complementary colors are opposite colors on a color wheel. Choosing any two sets of complementary colors will give you 4 colors that form a rectangle on a color wheel.
Blue is opposite orange
Violet is opposite yellow
Res is opposite green