CIE 015

This publication provides the recommendations of the CIE concerning colorimetry. Specifically, it includes the use of the standard colorimetric observers and standard illuminants, the reference standard for reflectance, the illuminating and viewing conditions, the calculation of tristimulus values, chromaticity coordinates, colour space coordinates and colour differences and various other colorimetric practices and formulae. As a new feature, the publication also includes further details of advanced colorimetry, including colour appearance models, and new findings on cone-fundamental-based tristimulus functions, with appropriate references to other CIE publications. Also new illuminants for different LED types are introduced. This publication is consistent with the fundamental data and procedures described in the CIE International Standards on colorimetry. For further details of some of the phenomena discussed here the reader is directed to the appropriate CIE Technical Reports. This report replaces CIE 15:2004 “Colorimetry, 3rd Edition”.