Olive green can be worn with a monochromatic or a color cluster ensemble, paired with lighter or darker olive or worn with a complementary color such as purple to add an opposite color that accentuates the olive green. Depending on the olive green's intensity, olive is sometimes considered neutral. Neutral hues are versatile and are the basic colors of a flexible wardrobe because they go with many color combinations in an outfit.
Color wheels are available online and can help when creating a matching wardrobe. They have been used to illustrate color theory. Most successful wardrobe colors include two or three colors that feature secondary colors and neutrals.