An image depicting the perception of the human brain of two identical colors as being different due to their association with different surrounding colors or shapes. This is called the Chubb illusion. Notably, the cyan square on the right appears darker than the same square on the left.
Original description: Colours can look differently depending on their surrounding colours and shapes. The two small squares have the exact same colour, but the right one looks slightly darker.
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<span class="int-own-work" lang="en">Own work</span>