Lulu's Aesthetic Pose Slate Blue and Gold Mercari ELI5:Why does this dress appear white gold to some people and black blue to others? : r explainlikeimfive ASOS Design asymmetric one shoulder midi dress with trim in light blue scuba style fabric 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 Optical illusion: Dress colour debate goes global BBC News