The lightness or darkness of the color is known as the color's?

The lightness or darkness of a color is defined as its value. In color theory, value refers to the relative lightness or darkness of a color when compared to another. Each color has a particular value that can be adjusted to create depth and dimension in artwork or design, influencing how colors appear in relation to one another.

Hue refers to the actual color itself, such as red, blue, or green. Saturation indicates the purity or intensity of a color, describing how vivid or muted a color appears. Intensity is similar but often used to describe the brightness or dullness of a color in a more qualitative sense. Understanding value is crucial for creating contrast and emphasis in visual compositions.