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Illustration depicting each format by color.
Illustration depicting each format by color.

The Rainbow Books are a collection of CD format specifications.

Red Book (1980)

Green Book (1986)

Yellow Book (1988)

Orange Book (1990)

Orange is a reference to the fact that red and yellow mix to orange. This correlates with the fact that CD-R and CD-RW are capable of audio ("Red") and data ("Yellow"); although other colors (other CD standards) that do not mix are capable of being burned onto the physical medium. Orange Book also introduced the standard for multisession writing.

Beige Book (1992)

White Book (1993)

Blue Book (1995)

Scarlet Book (1999)

Scarlet color of this book is a reference to the Red Book, which defines original CDDA.

Purple Book (2000)

See also