The dress is black & blue, but here's why you can't tell TJ Kelly Eleven years ago, a single photo posted on Tumblr sparked one of the biggest internet debates of all time. The dress instantly divided the world, some swore it was white and gold, Color Of 'The Dress' Debate: White & Gold Or Blue & Black Twitter Decides Hollywood Life 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 Blue Floral Print Ruffled Vintage Quinceanera Dress Puffed Sleeve Bow vigocouture