The primary colors of light are red, green, and blue (RGB). These colors correspond to the different wavelengths of visible light and can be combined in various ways to create a wide spectrum of colors. When red, green, and blue light are mixed in equal intensities, they produce white light. This additive color model is fundamental in various applications, including television screens, computer monitors, and photography. Understanding how these primary colors interact helps in color mixing and visual displays, making RGB a central concept in fields related to optics and digital media.