This explains how the blue black white gold dress illusion was possible. But it doesn't explain why some people saw it one way and some saw it the other, and no one seemed to see Optical illusion: Dress colour debate goes global BBC News 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 It's the Dress Debate (but with Politics this time) Even So, Joy Color Debate: The Gold and White vs. Black and Blue Dress TikTok