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 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 White & Gold Or Blue & Black? Debate Over Dress Color Rages On Roya News Blue black vs. white gold dress that split internet turns 10 Here's why people saw the dress differently.