I’ve never seen this kind illusion ever..

Ok, look at this image. This illusion says that Sqaure A and sqare B has same color. But according to my eyes, its not. The creater of this illusion says that we can check this fact by saving this picture and comparing A and B’s color using eyedropper tool of photoshop.

Trust me, he is right.. I checked it on my own, and i was shocked..

Give it a try..