What defines the difference in hue or value between two colors?

Contrast defines the difference in hue or value between two colors. It refers to the degree of difference and visual distinction that can be perceived when two colors are placed next to each other. Higher contrast means that the colors are more distinctly different, often making them more visually striking when used together in design. This can impact how elements are viewed and interpreted within an interactive design, as contrast helps in establishing hierarchy, emphasis, and relationships between design components.

Temperature refers to the perceived warmth or coolness of a color, while saturation indicates the intensity or purity of a color, showing how much gray is present in it. Closure, on the other hand, relates to a Gestalt principle of visual perception, where the mind fills in gaps to create a complete image. These concepts are important for understanding color theory and design principles, but they do not define the difference in hue or value between colors in the same way that contrast does.