So I searched up the black and blue dress : r opticalillusions Blue or Gold? How the brand behind #TheDress monetised viral success 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 ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Is That Dress White and Gold or Blue and Black? The New York Times