RGB stands for Red, Green, and Blue, which are the primary colors of light used in digital displays. By combining these three colors in various intensities, a wide spectrum of colors can be created. Each color is typically represented by a value ranging from 0 to 255, allowing for over 16 million possible color combinations. This color model is widely used in electronic devices such as computer monitors, televisions, and smartphones. It is essential for digital imaging and graphic design, as it helps in accurately reproducing colors on screens. The RGB model is foundational in fields like web design and photography.