Which term refers to the brightness or dullness of a color?

The term that refers to the brightness or dullness of a color is intensity. Intensity describes how vivid or muted a color appears. A high-intensity color is bright and vibrant, while a low-intensity color appears more subdued and closer to gray. Understanding the intensity of colors is essential in various fields, such as art and design, where color choices affect the overall mood and impact of a piece.

Shade, while related to color, specifically refers to a color that has been darkened by the addition of black. Tint, on the other hand, involves lightening a color by adding white. Emphasis pertains to design elements that draw attention to a particular area or feature, not directly related to the properties of color.