According to multiple sources, red light is the best color light to help you sleep. Red light increases the production of melatonin, which is a hormone that helps you mentally and physically relax while you drift off to sleep. Other warm hues of red, orange, and yellow are also better for preparing the mind and body for sleep. On the other hand, blue light is not suitable for lighting a bedroom as it throws off the sleep cycle and decreases the production of melatonin. Blue light is also emitted by electronic devices such as smartphones, tablets, and desktop screens, which should be avoided at night. Therefore, it is recommended to use warm colors like red or amber for lighting a bedroom at night to promote a good nights sleep.