Cubo Profundo , by loutphi , 2015 , abstract, illustration , Op Art, Abstract Art style , from the series Op Art , Pattern, Line
An abstract blue background with a square in the middle.
A square is in the middle of an optical illusion. The illusion is made up of blue lines. The lines are arranged in a zigzag pattern. The square is the only object in the image. The blue color of the image is bright and vivid.