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 The Dress: Color debate rages on the Internet East Bay Times ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive The Science Behind the Black and Blue (or White and Gold) Dress Colors of debate Always Overdone Is That Dress White and Gold or Blue and Black? The New York Times