Op Art (short for Optical Art) was a prominent art movement of the 1960s that found its expression primarily in painting. Artists used contrasting colours and geometric shapes, that repeated in specific compositions, to produce patterns that seemed to visually interact and be in motion. Many fashion designers began incorporating the visual language of Op Art into prints and woven fabrics. This can be seen in the use of simple, bold designs and in intricate combinations of colours and patterns that made garments seem to move by themselves. Often only black and white were used, but as OP ART shows, many other colour combinations were possible.