Here is an example of a photo utilizing 24-bit color.ģ2-bit color is also commonly referred to as 'true color,' because it still only has 16,777,216 unique colors. So-called 'true color' is a 24-bit RGB color system which uses a full byte (8-bits) for each red, green, and blue intensity (or channel) resulting in 16,777,216 possible colors.