Warm colour

Colours are often described as having temperature — as warm (reds, oranges, and yellows), or cool (greens, blues, and violets). Purple (red-violet) and yellow-green are between warm and cool. (Don't call them "neutral," because neutral colours are grays and browns. Warm colours are often associated with fire and the sun. They appear on one side of the color wheel, and opposite the cool colours. Psychologically, warm colours are said to be stimulating and passionate. Optically, warm colours generally appear to advance, coming toward the viewer.

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