Bit Depth

What Is Bit Depth?

Bit depth is the number of bits used to signify the color of a single-pixel or the number of bits used for each color of a single pixel. It quantifies the number of colors that are allowed in a pixel.

Bits per pixel	Number of colors available	Common Name
1	2	Monochrome
2	4	CGA
4	16	EGA
8	256	VGA
16	65536	XGA, High Color
24	16777216	SVGA, True Color