Ultraviolet light, for example, has a wavelength of 10-8 meters. Visible colors have a wavelength of about 10-6 meters, the diameter of a bacteria. Infrared light also has a wavelength of about 10-6 meters, but has a longer wavelength than the visible colors. The different colors of visible light have different wavelengths, but the wavelengths are very similar. Violet light has the shortest wavelength, is the coolest, and is closest to ultraviolet light.
Red light has the longest wavelength, is the warmest, and is closest to infrared light.
The other colors of visible light increase in wavelength and warmth as they get closer to red and infrared light. All the other visible colors are absorbed. For example, if you shine light on a blue object, it will absorb the warm red light, and will be warmer than a red object which would reflect that light. Cloth Color Red Orange Yellow Dk. 2.915476 1.642081 2.390457 Average Temp.