So I searched up the black and blue dress : r opticalillusions Tuckernuck Winetasting Vegan Suede Manon Dress Winetasting Suede XXS 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 Debate Black and Blue or White and Gold British Vogue British Vogue