RGB stands for "Red Green Blue."
Combining red, green and blue light is the standard method of producing color images on screens, such as TVs, computer monitors and smartphones.
When displaying a color image on a screen, each pixel has a specific RGB value. In 24-bit color, this value is between 0 and 255, where 0 is no color and 255 is full saturation).
RGB ( Red amount: 0-255, Green amount:0-255, Blue amount: 0-255 )