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, 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 Is The Dress blue and black or white and gold? The answer lies in vision psychology Psychology The Guardian The Dress": Why People See White and Gold or Blue and Black The Infamous White and Gold Dress Turns 10 Today The Blue Black or White Gold Dress and Questioning Reality Psychology Today