A white object reflects all wavelengths of light, so the light is not converted into heat and the temperature of the object does not increase noticeably. Different wavelengths (colors) of light have different amounts of energy.

Does white reflect heat?

In most cases white clothes look just like black clothes in the infrared spectrum. They both reflect about the same amount of thermal radiation. That means you are going to be better off with white clothes, since they don't absorb as much visible light.

Why does white reflect heat?

The more light the object absorbs, the more heat absorbed since light is energy. ... A black object absorbs all wavelengths of light and reflects none. Objects that are white, on the other hand, reflect all wavelengths of light and therefore absorb the least heat.