ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive In 2015, a photograph of a dress went viral, dividing viewers over whether its colors were blue and black or white and gold. This optical illusion highlighted differences in human color perception Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian Blue black or white gold? The dress debate is over