Since maroon is opposite yellowish green on the color wheel, those colors go well together. However, there are other ways to use the color wheel to determine matching colors. For instance, an equilateral triangle connects colors that complement each other, so maroon harmonizes with blue-green or orange-yellow.
Another color wheel variation involves using an isosceles triangle. This connects two close colors and one that is across the wheel. Therefore, maroon goes with navy blue and yellow. Maroon also pairs well with neutrals such as white, gray, black and khaki. In addition, different shades of maroon match. Dark, deep and lighter versions of maroon fit together well.