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MIXORA CONCEPT

Metamerism

Different spectral stimuli producing the same or very similar perceived color under a particular viewing condition.

colorthoughtbridgeStrong evidence
IN PLAIN LANGUAGE

A match made under one lamp can separate under another because the two samples return different wavelength patterns. This is especially important when matching paint to plastic, fabric or printed material.

What “Strong evidence” means

The core definition or effect is well established across authoritative standards, foundational research or a broad research literature. The label does not make every practical prediction certain.

Marker-board illustration created specifically to explain Metamerism: Different spectral stimuli producing the same or very similar perceived color under a particular viewing condition.VISUAL EXPLANATION · MARKER BOARD
Different spectral stimuli producing the same or very similar perceived color under a particular viewing condition.
EXAMPLE

Two gray samples match in daylight but one looks greener under warm indoor LEDs.

COMMON CONFUSION

A metameric match is not fake; it is conditional on the illuminant and observer.

ASK YOURSELF

Under which lights and viewing conditions must the match hold?

RELATED CONCEPTS
color × bridgeSpectral reflectance

The fraction of incoming light a surface returns at each wavelength.

→color × thought × bridgePerception

Processes through which sensory information becomes an experienced and usable representation of the world.

→color × thought × bridgeColor constancy

The tendency to perceive familiar surface colors as relatively stable despite changes in illumination.

→

SOURCES & TRUST

References

Last reviewed

  1. 01
    Colorimetry, 4th Edition

    CIE · 2018 · International Commission on Illumination

    Definitions and standard colorimetric practice.
    Reference source
  2. 02
    Color

    Jonathan Cohen and colleagues · Stanford Encyclopedia of Philosophy

    Philosophical accounts of what colors are and how color experience relates to the physical world.
    Reference source
What the source labels mean
Primary source
Original work, experiment, standard or historical text.
Academic source
Scholarly research or review published for an academic audience.
Reference source
An expert standard, encyclopedia or institutional explanation that summarizes a field.
General reference
A practical specialist resource useful for application, but not treated as decisive research by itself.