An image representation in which pixel colors are defined by storing three samples for each pixel, representing red, green, and blue intensities respectively. PNG also permits an alpha sample to be stored for each pixel of a truecolor image.

Another name for RGB images; that is, capable of representing a very large number of colors (usually anything up to 16.8 million, or even more) without resorting to quantization and dithering.

A term used to describe an image that has a bit depth similar to the response of the human eye and which is considered to represent color as seen through the human eye.