Overview of color validation metrics
A color validation test has a series of metrics that are calculated and evaluated when the test is
performed.
The tables lists all metrics that can be used in a color validation test. In practice, a color validation
test uses a small subset of the available metrics.
The measurements are the measured Lab values of the patches of the printed target chart of the
test.
â–³E00 (Delta E 2000)
Metrics Description
Substrate ΔE00 Color difference in ΔE00 between the measured and the reference
substrate white. For a side-by-side evaluation, the color control strip
must be printed with the rendering intent absolute colorimetric. The
reference substrate white is compared to the measured simulated
substrate white of the printed media.
Maximum ΔE00 Highest color difference in ΔE00 between the measured Lab values
of the color patches on the color control strip and the Lab values of
the matching patches of the reference printing condition.
Average ΔE00 Average color difference in ΔE00 between the measured Lab values
of the color patches on the color control strip and the Lab values of
the matching patches of the reference printing condition.
95th percentile ΔE00 The 95th percentile ΔE00 color difference between the measured Lab
values of the color patches on the color control strip and the Lab val-
ues of the matching patches of the reference printing condition. This
means that 95% of all measured patches have ΔE00 color differences
smaller than or equal to the metric value.
Maximum ΔE00 CMYK
solids
Highest color difference in ΔE00 between the measured Lab values
of the CMYK solid patches on the color control strip and the Lab val-
ues of the matching patches of the reference printing condition.
Maximum ΔE00 CMY
solids
Highest color difference in ΔE00 between the measured Lab values
of the CMY solid patches on the color control strip and the Lab val-
ues of the matching patches of the reference printing condition.
Maximum ΔE00 RGB
overprints
Highest color difference in ΔE00 between the measured Lab values
of the RGB overprint patches on the color control strip and the Lab
values of the matching patches of the reference printing condition.
NOTE
• Delta E 2000, △E00 is the industry standard. (
â–³E (Delta E)
on page 251)
• Refer to
Patches of the target chart
on page 248 to the read description of the patches.
Overview of color validation metrics
Chapter 15 - References
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