Hunt effect (color) explained

The Hunt effect or Luminance-on-colorfulness effect^[1] comprises an increase in colorfulness of a color with increasing luminance. The effect was first described by RWG Hunt in 1952.^[2]

Hunt noted that this effect occurs at low luminance levels. At higher luminance, he noted a hue shift of colors to be more blue with higher luminance, which is now known as the Bezold–Brücke effect. The Hunt effect is related to the Helmholtz–Kohlrausch effect, where a partially desaturated stimulus is seen to be brighter than fully saturated or achromatic stimuli.

See also

• Opponent process
• Purkinje shift
• Abney effect

Notes and References

1. Pridmore . Ralph W. . Melgosa . Manuel . All Effects of Psychophysical Variables on Color Attributes: A Classification System . PLOS ONE . 10 April 2015 . 10 . 4 . e0119024 . 10.1371/journal.pone.0119024 . 25859845 . 4393130 . 2015PLoSO..1019024P . free.
2. Hunt . R. W. G. . Light and Dark Adaptation and the Perception of Color* . Journal of the Optical Society of America . 1 March 1952 . 42 . 3 . 190–199 . 10.1364/JOSA.42.000190. 14908745 .