Adobe RGB (1998)
From Just Solve the File Format Problem
It was invented accidentally by Adobe, in a botched attempt to support SMPTE 240M. Photoshop originally listed it as "SMPTE 240M", but soon renamed it to "Adobe RGB 1998".
- Adobe RGB (1998) Color Image Encoding, version 2005-05
- Adobe RGB Color Space Specification, DRAFT 2004-10-12