The dress was a 2015 online viral phenomenon centred on a photograph of a dress. Viewers disagreed on whether the dress was blue and black, or white and gold : r wikipedia Viral 'Blue and Black or White and Gold' dress marks 10 years YouTube 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 What color is the dress? : r opticalillusions so we know the dress was black and blue BUT that's not what i'm here to discuss : r opticalillusions Met Gala 2026: All the best red carpet looks CNN