Additive color models are systems used to create colors by combining different light wavelengths. The primary colors in this model are red, green, and blue (RGB). When these colors of light are mixed together in various intensities, they produce a wide range of colors. For example, combining all three at full intensity results in white light, while no light results in black. These models are commonly used in digital displays, such as computer monitors and televisions, where light is emitted directly. By adjusting the intensity of each primary color, devices can reproduce millions of colors, making them essential for visual media.