In color theory, what component is NOT one of the fundamentals needed for color vision?

In color theory, the fundamentals needed for color vision include a light source, an object, and an observer. The light source is essential because it illuminates objects and enables the perception of color. The object interacts with light, reflecting or absorbing wavelengths that contribute to the color we perceive. The observer, or the viewer, plays a critical role as the human eye and brain process the visual information received from the object and light.

Color harmony, while important in the context of design and aesthetics, does not play a fundamental role in the basic perception of color. Color harmony refers to the arrangement of colors in a way that is pleasing to the eye, and involves concepts like complementary, analogous, or triadic color schemes. However, it does not directly contribute to the physical process through which color vision occurs. Therefore, it is indeed not one of the fundamental components required for the basic functioning of color vision.