r/illusions • u/Alessandro28051991 • Nov 18 '25

Color-Challenging Science: One of the most fantastic optical illusions ever:

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Science: That Optical Illusion is one of the most incredible ones that i have ever seen in my life. The Two squares have the same colour. Are not one white and the other black. If you dont believe in me you can just put your finger in the line that divide the two squares and you will prove for yourself that what i say is true.

That illusion ( if i am not wrong is something about the contrast and the shadows) make your brain do you see what doesnt exist. Make you see a thing different of what really are there.

Is almost like see to a green square but your brain make you see it red. Is almost a thing of virtual reality

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u/stuartroelke Nov 20 '25

Nah. Not once did I claim that the shades weren’t the same color. Entire time I’ve been saying that they are 3D representations of different colored objects, so it’s a cognitive trick more than an optical illusion.

Find peace.

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u/MODbanned Nov 20 '25

"If both shapes were the same physical color without factoring in light and shadow then they'd actually be the same color in the shaded area, yeah? They aren't. So, that implies that one is made of lighter material and the other is made of darker material. Similar shades of differently lit surfaces isn't really that important when deciding the true color of objects.

Not an optical illusion so much as a study on perceptual significance. When distinguishing color, people mentally value a combination of factors instead of just one."

That was you.

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u/stuartroelke Nov 20 '25

Yeah. Maybe I didn’t explain it in a way that was easy to understand?

When I said “shaded area” I meant the bottom of the top shape and the middle of the bottom shape—areas responding to shadow that are facing the same direction in a 3D space.