Almost any color can complement orange, depending on what other colors are used in the arrangement, but the traditional complementary color for orange is a slightly lighter shade of blue. On the traditional color wheel, colors directly opposite each other are considered complementary.
Working with the color wheel, one will find that there are also analogous, triad, split-complementary, rectangle and square color schemes, in which three or more colors are used together to create a design attractive to the eye. In fashion, orange may often be used as an accent piece for a bold splash of color. An orange dress, coat or leggings can also work as a statement piece.