GB/T 7921-1997
Uniform colour space and colour difference formula (English Version)

Standard No.

GB/T 7921-1997

Language

Chinese, Available in English version

Release Date

1997

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Status

Be replaced 2009-03

Replace By

GB/T 7921-2008

Latest

GB/T 7921-2008

Scope

This standard specifies CIE1976 (L^*u^*v^*) and CIE1976 (L^*a^*b^*) color space and the corresponding color difference formula. This standard applies to the expression of all light source colors and object colors, as well as the expression and calculation of color difference.

GB/T 7921-1997 history

• 2008 GB/T 7921-2008 Uniform color space and color difference formula
• 1997 GB/T 7921-1997 Uniform colour space and colour difference formula