ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive The actual dress was black and blue. The confusion came from how lighting and color perception tricked people's brains, making some see it as white and gold. It became a viral example 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. The science behind the dress colour illusion Internet The Guardian Amarra 54324 Quinceanera Dress Long Detachable Hooded Cape Royal Blue Gold 2