SRGB

sRGB is a standard color space (a way to encode colors as numbers) developed by Microsoft and Hewlett-Packard.

It is widely used on the web, and by computer monitors. Many standards such as HTML and CSS define their colors in terms of sRGB.

Many image creation workflows do not do sophisticated color management, so image files often use sRGB in practice, whether or not their specification says they should.

The biggest drawback to sRGB is probably its relatively small color gamut.

Specifications

 * A Standard Default Color Space for the Internet - sRGB
 * Specification of sRGB

Links

 * Wikipedia: sRGB
 * ICC profiles for sRGB (see also ICC profile)
 * Lagom LCD monitor test pages
 * Digital-Image Color Spaces