COLOR DISCRIMINATION UNDER DIM AMBER, RED AND WHITE LIGHTING: THE TRADE-OFF BETWEEN ECOLOGICAL IMPACT AND HUMAN VISUAL PERCEPTION (Dataset)

Architectural lighting at night poses emerging challenges for both human well-being and ecological systems. Amber and red lighting have been proposed as mitigation strategies to reduce the environmental impacts of anthropogenic light at night (ALAN). However, the implications of these alternative lighting spectra for human visual perception and tasks performance remain largely unexplored. This study investigated the combined effects of illuminance and spectral composition on human color discrimination under mesopic lighting conditions. Forty-eight participants completed the Farnsworth-Munsell 100-hue test and named 14 color samples under three chromaticities (amber, red, and white) each presented at five illuminance levels (0.1, 1, 5, 10, and 20 lx).