Is the painting above moving? Or are your eyes playing tricks on you? The 1964 painting Hesitate, by British artist Bridget Riley, is an optical illusion. As the gray circles flatten into ovals, the painting appears to curve, becoming three-dimensional. The variations in the circles’ values (how light or dark each one is) suggest that the two-dimensional surface is warping.
Riley, born in 1931, dedicated her career to learning how light and color can work together. She focuses on the optical aspects of art, and she quickly emerged as one of the leaders of the Op Art movement. Op artists use shape, line, and color to create optical illusions.
Kandinsky, Mondrian, and Riley each made careful choices about color, shape, and composition as they worked on the paintings shown here. Use what you’ve learned as you look at the works shown on the pages that follow. And as you do, ask yourself if you still think making abstract art is easy!