What Color Is The Dress? The Color Theory Behind The Debate Not Sorry Art Remember when the internet went absolutely nuts on the colour of a dress? The dress was blue and black. The original viral poster, Caitlin McNeill, later said it was a black and blue dress Princess Polly Women's Vinelle Sequin Long Sleeve Velvet Minidress Black Mini dresses 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