Light is made up of wavelengths of light, and each wavelength is a particular colour. The colour we see is a result of which wavelengths are reflected back to our eyes. The visible spectrum showing the wavelengths of each of the component colours.A light source's color temperature can significantly impact the look and feel of a room or environment. Warm light sources, with temperatures below 3000K, create a cozy, comfortable atmosphere. They are often used in living rooms, bedrooms, and other spaces where relaxation is the primary focus.