Is it white and gold or blue and black? The truth behind the dress debate. CooperVision Photo finally solves the black and blue white and gold dress debate 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 The Dress is now a Halloween costume 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