RGB stands for red, green, blue. The term refers the colour model where varying intensities of red, green and blue light can be combined to create any colour in the visible spectrum.
RGB is an additive colour model which means that as the intensity of colours is increased, the result becomes lighter. For example, all three colours combined at their fullest intensity produce white. At their lowest intensity, there is no light which the human eye interprets as black.
The RGB colour model is used to produce colour images on TV screens, computer monitors and smartphone screens. The images produced by digital cameras and scanners also use the RGB model.
