What is BS 6923- Calculation of small colour differences about?
BS 6923 is an international standard that discusses the method for the calculation of small colour differences.
BS 6923 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, the total colour difference, quantifies the perceptibility of the colour difference or the acceptability of the colour match.
The latter permits the specification of a maximum value that depends only on the closeness of the match required for a given end-use and not on the colour involved nor on the nature of the colour difference.
Who is BS 6923- Calculation of small colour differences for?
BS 6923 on the calculation of small colour differences is relevant to:
- Members of the CIE technical committee
- Paint-maker’s associations
- Vitreous enamellers industries
- Printing ink manufacturers
- Colour and printing industries
- Testing authorities
Why should you use BS 6923- Calculation of small colour differences?
The magnitude of the colour difference between two specimens is calculated by means of a modified version of the internationally recognized CIELAB colour difference formula.
BS 6923 discusses the colour difference between the two specimens is partitioned into components of lightness, chroma and hue.
BS 6923 lays down the technicalities for a method used to calculate the colour difference between two samples of the same material, measured under the same conditions. It gives you information about the principle of the test, helps the users to execute the calculations as well as gives an interpretation of the final test results.
Overall, BS 6923 is useful for you as it provides guidance on the method for calculation of small colour differences which describes the total colour difference, and the component colour differences.