ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive How "The Dress" Became an Illusion Unlike Any Other Scientific American 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 Blue Gold Formal Metallic Paisley Print Gown Barbie Fashion Sheer Sleeves Dress eBay Here's why people saw the dress differently.