Have you specified your color tolerance?


A color tolerance is a limit to how big difference you accept between your sample and your color standard. Tolerance values should be defined internally and communicated throughout the supply chain. The tolerance is used in quality control to determine if the sample passes or fails inspection. 

You are probably familiar with the measurement for distances (meters, inches, miles…), weights (kg, pounds…). But do you know what measurement to use when it comes to colors?

A color is measured in Delta E (ΔE). (Delta is a Greek letter often used to show difference, and E stands for Empfindung (German for "sensation").

A ΔE of under 1.0 is supposed to be indistinguishable. However, the human eye is more sensitive to certain colors than others. A certain ΔE may be insignificant between two colors that the eye is insensitive to and may be obvious in another part of the color spectrum. A good metric should take this into account.

The way trained colorists speak about colors (i.e. their color language) during a color assessment has a direct correlation with the Delta E (ΔE) system. It is essential to know at least the basics of the common color language when communicating color internally and throughout the supply chain.

There are several mathematical transformations of Delta E, such like below. The CMC color difference equation is mostly established in the global textile industry.
• CMC
• CIE94
• DIN99
• CIE DE200



Establishing color tolerances objectively is an effective way to meet color standards more efficiently, as well as to maintain color consistency and accuracy, and to avoid color variations.


Do you want to specify your color tolerance? Contact natific’s support team at support@natific.com

Ps. Speaking about tolerances and color standards, you might be interested in reading this article (What most people don't know about Color Standards).


                    


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