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 White Gold Dress Blue Black This image continues to divide the world: What color do you Blue and black or white and gold? It's been a full decade since "The Dress "took over the internet, yet Proof the Dress Is Blue PS Tech