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 ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive Gold Blue And Black Yellow And White Dress The Dress' Went Viral 10 Years Ago And Sherri Hill 56757 Grace Kelly's The science behind the dress colour illusion Internet The Guardian