👉 Red, green, blue are three primary colors in the human visual system that each create distinct shades based on light levels in a room. RGB stands for Red, Green, and Blue color. These are typically represented by the numbers 0, 128 (blue), and 255 respectively, which form an eight-bit integer. Each number represents one of four components within a single RGB value - red (R), green (G), blue (B) or white (W).