... is the number of bits used to encode the color of each pixel.
Therefore with color depth n we can encode 2n colors.
- color depth 8: We can represent 256 colors.
- High color: color depth = 16: 6 bits are used for red parts,
5 bits for green and blue parts each.
These parts are combined additively (like with colored light,
on the screen, and subtractively
(using Cyan, Magenta, Yellow and Black
like on paintings, the model) when printing.
- True color: color depth = 24: same as above, but with 8 bits
for each of red, green, blue.