Comparison of colour perception tests
How does ColorAptitude™ compare to FM100, Ishihara, anomaloscope and other classic colour perception tests? Compare across 18 criteria.
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Knowledge Base
Everything about colour perception, our test methods, scientific standards and how to interpret your results.
Glossary
From ΔE to FM100: an overview of 25 technical terms relating to colour perception, standards and ColorAptitude™-specific concepts.
Read more →Scientific positioning
The relationship between ColorAptitude™ and ASTM E1499-16: why the platform is not a replica, but a complementary qualification instrument.
Read more →Scientific foundation
The scientific basis, applied standards and methodological choices behind ColorAptitude: competency model, stimulus design, scoring model and ASTM E1499-16 conformity.
Read more →Blog
Articles on inter-observer variation, ASTM E1499-16 explained, colour and the observer, and observer differences as an organisational problem.
Read more →What does each test measure?
Detailed explanation per assessment and training module — what is measured, how it works and what the result means.
Read more →Scientific references
The papers and research on which ColorAptitude™ is based: FM100, CIE L*a*b*, ASTM E1499-16 §5.3, ISO/IEC 17025 Clause 6.2, OKLCH and more.
Read more →Standards & norms
Explanation of the international standards used: Farnsworth-Munsell, ASTM E1499-16 §5.3, ISO/IEC 17025 Clause 6.2, OKLCH colour space.
Read more →How do I read my report?
Interpretation of your 3×3 colour profile, what the scores mean and how to use them in your work.
Read more →Score system
How scores per assessment are calculated, what the axes in the spiderweb chart mean.
Read more →Colour perception
The science behind colour perception: cones, opponent channels, ageing and training.
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