What does the hue of a color denote?

The hue of a color specifically refers to its chromatic name, which indicates the type of color it is, such as red, blue, or yellow. Additionally, it encompasses the warmth or coolness associated with that color. For instance, warm hues include colors like red and yellow, while cool hues incorporate colors like blue and green. This understanding of hue is crucial in color theory, as it helps to categorize and create color palettes that convey various emotions and aesthetics depending on their temperature.

In contrast, other options focus on different aspects of color. Lightness and darkness relate to value, which discusses the lightness or darkness of a color, rather than its hue. Strength and purity refer to saturation, which measures the intensity of a color, and dullness pertains to how muted or grey a color appears, both distinct concepts from hue.