What color are the circles? Viral optical illusion baffles the internet

Viral optical illusion shows dots that are the same color, but are perceived by the brain as four different hues. Expert explains how the Munker illusion works.
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Photos of Mind-Boggling Optical Illusions and How They Work

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Page 10, colorful circles. HD wallpapers

Mind-boggling optical illusion tells you to stare at circles for a few seconds - Daily Star

Tricky optical illusion goes viral & leaves viewers baffled

Optical illusions asks people to pick how many colours they can

Can you find the 'C' in the newest viral illusion to baffle the

Page 2, colors illusion HD wallpapers

Only 10% of people can spot the hidden number in these optical illusions