Remember the DRESS from 2015?
"The Dress" was a viral 2015 optical illusion where a photo of a blue and black dress appeared as white and gold to many, sparking global debate because people's brains interpreted the ambiguous lighting differently, with some correcting for shadows (seeing gold/white) and others for bright light (seeing blue/black). The actual dress was
blue and black, but the poorly lit photo made it look like white and gold for those assuming it was in shadow, while others saw it as blue and black under artificial light, showcasing
color constancy.
TODAY
YouTube ⢠Feb 20, 2025
The Science Behind the Illusion
- Color Constancy: Our brains automatically adjust for lighting to perceive an object's true color (e.g., a white shirt looks white in sunlight and shade).
- Ambiguous Lighting: In the photo, the lighting was so poor that brains made different assumptions.
- Shadow Assumption: People assumed the dress was in shadow (overexposed blue light), so their brains subtracted the blue, making the blue look white and the black look gold.
- Bright Light Assumption: Others assumed it was under bright artificial light, perceiving the true blue and black colors.
https://www.wired.com/2015/02/science-one-agrees-color-dress/