10 years ago, a simple photograph of a dress sparked a global debate unlike anything seen online before. Posted in 2015, the image caused people to argue intensely over whether the dress black and blue, white and gold GIF Imgur 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 Blue Graduation Dress Guide: Best Styles & Shades Adrianna Papell Black and Blue Dress Proof or is it really black and blue?? GIF Imgur How to See the Dress As White and Gold and Black and Blue Business Insider