Delta-E
A numeric measurement of color difference between a target color and a measured color. ΔE < 1 is calibration-grade; ΔE < 2 is invisible to most viewers; ΔE > 4 is visible to anyone.
Delta-E quantifies how far a measured color sits from its reference in a perceptually-uniform color space. The modern variant is ΔE2000 (CIEDE2000), which corrects for non-uniformity in older ΔE76 measurements.
Bands
- < 1.0 — indistinguishable, even side-by-side.
- 1.0–2.0 — visible only to trained eyes on a reference patch.
- 2.0–4.0 — visible in continuous tones; acceptable for general work.
- > 4.0 — visible mismatch.
Average vs max
A reported average ΔE of 1.2 with a max of 6.3 means most colors are accurate but a handful are way off — usually deep blues or saturated reds. Look for both numbers, not just the average.
How to use Delta-E in a real comparison
A numeric measurement of color difference between a target color and a measured color. ΔE < 1 is calibration-grade; ΔE < 2 is invisible to most viewers; ΔE > 4 is visible to anyone. In practice, this is most useful as one part of a decision rather than a standalone quality badge. Compare it alongside the workload, room, ecosystem, budget, and ownership constraints that apply to you; the strongest published figure is not automatically the best outcome for every buyer.
What to check next
Open a product page and check the stated value, configuration, price, and related trade-offs before treating this term as decisive. It is especially relevant in .
Avoid the one-number trap
Manufacturers can describe the same capability under different conditions. Compare like-for-like variants, check the unit and test condition where available, and use a head-to-head page to see whether a measurable difference is material for your own use.
vsMars presents structured catalog values to make trade-offs legible. The linked product and spec pages are the right place to inspect the underlying values before buying.