Op Art — short for Optical Art — emerged in the 1960s as a movement that treated the canvas as a perceptual instrument. Victor Vasarely, Bridget Riley, and others created paintings that appeared to move, pulse, and vibrate through precise geometric arrangements. The 1965 MoMA exhibition "The Responsive Eye" brought the movement to mass attention and controversy — critics debated whether tricking the eye counted as art.
The movement drew from earlier explorations in Bauhaus color theory, Constructivism, and the geometric abstractions of De Stijl. But Op Art was distinct in its single-minded focus on perceptual effect. The artwork was not about expression or meaning — it was about what happens in the space between the surface and the eye.
On the web, Op Art finds a natural home. CSS gradients can generate the precise repeating patterns that painters once labored over by hand. Animation adds a dimension that canvas never had. And the backlit screen — emitting light rather than reflecting it — intensifies every contrast. The browser becomes exactly what Op Art always wanted: a surface that truly moves.