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Related Experiment Videos

New dimensions in color perception.

Donald I.A. MacLeod1

  • 1Psychology Department, UCSD, 92093, La Jolla, CA, USA

Trends in Cognitive Sciences
|March 18, 2003
PubMed
Summary

Perceived color is not adequately described by standard three dimensions. New experiments show constant hue lines converge on surround colors, not gray, challenging existing color models.

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Area of Science:

  • Visual perception
  • Color science
  • Psychophysics

Background:

  • Standard color models organize color in three dimensions: hue, saturation, and brightness.
  • Lines of constant hue are theoretically expected to converge on an achromatic point (gray).

Purpose of the Study:

  • To investigate the convergence point of constant hue lines in perceived color space.
  • To challenge the adequacy of standard three-dimensional color models.

Main Methods:

  • Experiments involved presenting colored patches within colored surrounds.
  • Participants observed color stimuli under controlled conditions.

Main Results:

  • Lines of constant hue did not converge on gray.
  • Constant hue lines converged on the color of the surround, a paradoxical observation.

Conclusions:

  • The standard three-dimensional model of perceived color is insufficient.
  • Perceived color is influenced by context, specifically surround colors.

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