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 The dress: Celebrities join the white and gold or blue and black debate Daily Mail Online Theory Size P Woman's Blue Black White Silk Mercari