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Color difference formulas objectively quantify the difference between two colors. Discover the main formulas - CIE76, CMC, CIE94, and CIEDE2000 - their strengths and when to use which formula.
In CIELAB, the difference between two colors is described as the distance between their coordinates. Learn how ΔE*ab is calculated, what ΔL*, Δa*, and Δb* mean, and why modern formulas like ΔE00 are needed.
Small deviations in pigment dosing, equipment, or working methods quickly lead to visible color differences. Learn the 12 essential guidelines to prevent errors in color matching and ensure a reproducible process.
Accurate color measurements do not happen by accident, but through standardized procedures, technical knowledge, and qualified operators. Learn the 13 essential guidelines for consistent and reproducible color measurements.
Inter-instrument agreement describes the extent to which different instruments produce the same color values. This article explains why this is essential and how to measure it.
Metamerism is the phenomenon where two colors appear identical under one light source, but visibly differ under another light source. This article explains how metamerism occurs and how to prevent it.
Visual color assessment requires more than just good vision. This article describes the four most important requirements that a professional color assessor must meet.
What do we mean by color quality? This article explains how color quality is defined, measured, and assessed based on nuance, purity, hue, and tolerances.