ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Character Dresses Only Little Once I See White and Gold, but the Dress Taught Me How We Shape Our Own Reality by Shaant A Culturated Medium Photo finally solves the black and blue white and gold dress debate Ten years ago, a photo of a dress posted on Tumblr sparked a massive debate: was it blue and black or white and gold? Millions argued online, and even celebrities joined in. Scientists later explained Optical illusion: Dress colour debate goes global BBC News