RGB stands for Red, Green, and Blue-the three primary additive colours used in digital imaging to create a wide spectrum of colours. By combining these colours in varying intensities, secondary colours such as cyan, yellow, and magenta are produced, while equal proportions of all three create white light.
Computer monitors generate accurate colours by emitting light through red, green, and blue phosphors, while digital cameras and scanners capture colour information using RGB filters over their sensors (CCDs or CMOS). Understanding RGB is essential for photographers, designers, and digital artists to manage colour accurately across screens, digital images, and editing workflows.