Color Delta L at Color

Color Delta L. The expressions for these colour differences are dl*, da*, db*, or dl* dc* dh* (d symbolises delta, which indicates difference). The difference is a quantitative measurement of color change.

The Print Guide Tolerancing color in presswork CIE L*a*b* and DeltaE
The Print Guide Tolerancing color in presswork CIE L*a*b* and DeltaE from the-print-guide.blogspot.com

Assessment of colour is more than a numeric expression. Usually it's an assessment of the colour difference (delta) from a known standard. If delta a* is positive;

The Print Guide Tolerancing color in presswork CIE L*a*b* and DeltaE

The sample is lighter than the standard. These delta values are used to express the mathematical differences between standard and the color match or standard and the production batch. Compare sample colors quickly and accurately. The sample is more red (or less green)than the standard.