Color-tolerance data and the tentative CIE 1976 L*a*b* formula

Abstract

In response to general request of CIE Technical Committee TC 1.3 for evaluation of the proposed small-color-difference formula, tentative CIE 1976 L a b, unit color-difference contours generated this formula have been calculated and compared to cross sections in the chromaticity diagram of ellipsoids fitted nearly optimally to relevant visual color-tolerance data.