This is a list of the full color palettes for notable video game console hardware.
For each unique palette, an image color test chart and sample image (Truecolor original follows) rendered with that palette (without dithering) are given. The test chart shows the full 8-bits, 256 levels of the red, green and blue (RGB) primary colors and cyan, magenta and yellow complementary colors, along with a full 8-bits, 256 levels grayscale. Gradients of RGB intermediate colors (orange, lime green, sea green, sky blue, violet and fucsia), and a full hue's spectrum are also present. Color charts are not gamma corrected.
The Atari 2600 used different YPbPr color palettes dependent on the television signal format used.
With the NTSC format, a 128-color palette was available, built based on eight luminance values and 50 combinations of Pb and Pr chroma signals (plus Pb = Pr = 0 for a pure grayscale):
With the PAL format, a 104-color palette was available. 128-color entries were still selectable, but due to changes in color encoding schemes, 32 color entries results in the same eight shades of gray:
The SECAM palette was reduced to a simple 3-bit RGB, containing only 8 colors (black, blue, red, magenta, green, cyan, yellow and white):
The Picture Processing Unit (PPU) was used in the Nintendo Entertainment System and had a YPbPr 64-color palette , of which nine are duplicates and one is out of NTSC's gamut, giving a total of 54 useful colors. The palette is built based on four luminance values and twelve combinations of Pb and Pr chroma signals (plus two series of Pb = Pr = 0 for eight pure grays). Two of the shades of gray are identical, one has negative brightness, and one is within 2% of another, so sometimes the palette has been reported to have 53 to 55 colors.