So I searched up the black and blue dress : r opticalillusions 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 Here's why people saw the dress differently. Yellow Dress Original Gold And White Black And Blue Optical Illusion: Dress Colour Debate Goes Global Optical Illusion Dark Blue And Gold Dress Exploring Color Constancy: The Dress Phenomenon Explained Black Blue Yellow White Dress Black The Blue And White Dress Illusion Illusion Yellow Blue