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Red, yellow, green and blue are not particularly colorful

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Version 2 2023-06-12, 09:17
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journal contribution
posted on 2023-06-12, 09:17 authored by Christoph Witzel, John MauleJohn Maule, Anna FranklinAnna Franklin
Colorfulness and saturation have been neglected in research on color appearance and color naming. Perceptual particularities, such as cross-cultural stability, “focality”, “uniqueness”, “salience” and “prominence” have been observed for red, yellow, green, and blue, when those colors were more saturated than other colors in the stimulus samples. The present study tests whether high saturation is a particular property of red, yellow, green and blue, which would explain those observations. First, we carefully determined the category prototypes and unique hues for red, yellow, green, and blue. Using different approaches in two experiments, we assessed discriminable saturation as the number of just-noticeable differences away from the adaptation point (i.e. neutral gray). Results show that some hues can reach much higher levels of maximal saturation than others. However, typical and unique red, yellow, green, and blue are not particularly colorful. Many other, intermediate colors have a larger range of discriminable saturation than these colors. These findings suggest that prior claims of perceptual salience of category prototypes and unique hues actually reflect biases in stimulus sets rather than perceptual properties. Additional analyses show that consistent prototype choices across fundamentally different languages are strongly related to the variation of discriminable saturation in the stimulus sets. Our findings also undermine the idea that every color can be produced by a mixture of unique hues. Finally, the measurements in this study provide a large amount of data on saturation across hues, which allows for reevaluating existing estimates of saturation in future studies.

History

Publication status

  • Published

File Version

  • Published version

Journal

Journal of Vision

ISSN

1534-7362

Publisher

Association for Research in Vision and Ophthalomology

Issue

27

Volume

19

Page range

1-26

Department affiliated with

  • Psychology Publications

Full text available

  • No

Peer reviewed?

  • Yes

Legacy Posted Date

2019-12-17

First Open Access (FOA) Date

2019-12-17

First Compliant Deposit (FCD) Date

2019-12-16

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