Exploring Visual and Affective Qualities of Equivalent Colors under Architectural-scale, Full-field Exposure Conditions

The researchers used mixed methods to conduct architectural-scale studies to explore possible differences in visual, affective and physiological qualities for nearly equivalent stimuli, matched very closely for chromaticity and light level. Two different color series were tested, amber and cyan. For each, there were seven different ways to produce near-metameric color conditions: 1) color filtered tungsten, 2) distinct narrowband LED, 3) RGB source LED, 4) 7-color source LED, 5) video projector, 6) colored paint illuminated by white tungsten, and 7) colored paint illuminated by white LED. Results from both Study 1 and 2 suggested that there were reliable differences between the seven near-metameric conditions for the perceived visual perceptions of brightness and saturation as well as the affective qualities of emotional and spatial qualities.