Orange Book (CD standard)
- Red Book (CD Digital Audio),
- Yellow Book (CD-ROM and CD-ROM XA),
- Orange Book (CD-R and CD-RW),
- White Book (Video CD),
- Blue Book (Enhanced CD, CD+G and CD-Plus),
- Beige Book (Photo CD),
- Green Book (CD-i).
- Purple Book (DDCD)
The "Orange Book" (or "Orange Books") is a series of technical standards published by Philips containing full specifications of the CD-MO, CD-R and CD-RW discs.