Mixing the primary colors of light, which are red, green and blue (RGB), is performed using the additive color system, also known as the RGB model or the RGB color space . All possible colors that can be created by mixing these three color lights are alluded to as the color spectrum of these lights in particular. When no light color is present, the black is perceived. Primary colors of light have application on computer monitors, televisions, video projectors and all those systems that use combinations of materials that phosphorescent in red, green and blue.