Definitions for "Warm colors"
Keywords:  orange, yellow, suggest, viewer, hues
Colors whose relative visual temperature makes them seem warm. Warm colors or hues include red-violet, red, red-orange, orange, yellow-orange, and yellow. See also cool colors.
Colors often associated with fire and sun, which suggest warmth: red , yellow and orange, or colors with tints or shades of yellow or orange.
On a color wheel, the range of reds, yellows, oranges and red-purples. Warm colors, especially when saturated, tend to advance.