According to the color wheel, the complementary color that matches best with gold is a combination of blue and purple. Gold is most closely related to an orange-yellow mix.
The complementary color for orange is blue, and the complementary color for yellow is purple, which allows for the blue-purple combination to complement gold. Complementary colors are colors that are opposite each other on the color wheel and create white light when mixed in the right proportions. The pairing of complementary colors is the most striking and visually appealing because they balance each other, so they are the ones that tend to "go together." The pairing of gold with blue-purple is aesthetically pleasing by nature.