title: Brown.
abstract: In this Quick Guide, Steven Buck explains how, uniquely among the bright primary perceptual hues, yellow changes its hue when it appears dark, becoming the colour brown.
authors.affiliation: Department of Psychology, University of Washington, Seattle, WA 98195-1525, USA. Electronic address: sbuck@uw.edu.
authors.forename: Steven L
authors.initials: SL
authors.lastname: Buck
mesh_terms: D003116:Color / Q000592:standards*; D003118:Color Perception / Q000502:physiology*; D006801:Humans; D008027:Light