Tuesday, July 17, 2007

Aagh! Mind melting


Are squares A and B the same colour or different?

They are the same. Impossible, I know, but trust me, they are. To test it I sampled both squares in Photoshop, and they're identical. They each have CMYK values of C=57, M=48, Y=44 and K=11.

This is obscurely known as the same colour illusion.

Excuse me, I see a wall I must go and bang my head against.
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4 comments:

  1. Anonymous7:59 pm

    You checked it in Photoshop?

    Brilliant.

    ReplyDelete
  2. Ben8:05 pm

    I take nothing for granted. Nothing!

    ReplyDelete
  3. Sarah :)7:25 am

    hehe yeah i've seen those before, they are brilliant and entirely frustrating at the same time!

    ReplyDelete
  4. Penny2:46 pm

    By the low-tech means of covering up most of the screen so that only portions of those 2 squares were showing, I found I could finally see them as the same colour. Saw a nice high-tech version at Eastercon where the 2 squares were moved to be next to each other.

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