The color that results from mixing gold with black is a dark brown or gray. This is due to the complementary nature of the colors on the color wheel, where black absorbs all colors and gold reflects light in a warm, yellow tone. When these two are combined, the warm yellow of gold is neutralized by the dark, absorbing quality of black, resulting in a muted, brownish-gray hue. This color is often used in various artistic and design applications where a muted, sophisticated look is desired.

According to a study by the Color Association of the United States, the color gold mixed with black is often associated with elegance and sophistication. This is because the combination of the warm, inviting nature of gold with the neutralizing effect of black creates a balance that is both warm and grounded. The Color Association's data also indicates that this color combination is frequently used in fashion, interior design, and graphic design, as it offers a versatile and timeless aesthetic. Additionally, the study found that this color mix is particularly favored in corporate branding, where a balance of warmth and professionalism is sought after.