IS 15098 : 2002 Textiles - Method for Calculation of Colour Difference

ICS 58.080.01                                                TXD 5

Reaffirmed 2020

Scope

This standard provides a method of calculating the colour difference between two specimens of the same material, measured under the same conditions, such that the numerical value DE_cmc (1 : c) for the total colour difference quantifies the extent to which the two specimens do not match. It permits the specification of a maximum value (tolerance) which depends only on the closeness of match required for a given end-use and not on the colour involved, nor on the nature of the colour difference. The method also provides a means for establishing the ratio of difference in lightness to chroma and to hue.

Note - Annex A provides guidance on the interpretation of results. Annex B provides sample test data for use in checking computer programs while Annex C contains a sample computer programme for calculating colour difference.