ObsoleteGo to latest versionGB/T 7921-2008

GB/T 7921-1987Uniform colour space and colour difference formula (English PDF)

GB/T 7921 | Evolution and historical versions

Std ID	Title	Status
GB/T 7921-2008	Uniform color space and color difference formula	Valid
GB/T 7921-1997	Uniform colour space and colour difference formula	Obsolete
GB/T 7921-1987	Uniform colour space and colour difference formula	Obsolete

GB/T 7921-1987 is obsolete. It has been replaced by GB/T 7921-1997. This page sells the obsolete edition, for projects and contracts that still cite it.

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Level / Type

National · Recommended

Scope

GB/T 7921-1987 (Uniform colour space and colour difference formula) is available as an English-translated PDF.

GB/T 7921-1987 is the Chinese national standard "Uniform colour space and colour difference formula". It is obsolete: it has been replaced by GB/T 7921-1997.

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Document preview — GB/T 7921-1987

Document data

1 Document data

Sector: National standard (Recommended).

Status: obsolete, replaced by GB/T 7921-1997.

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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — all pages — is available in the English PDF.

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