Op art generator

What op art is

Op art, short for optical art, is abstract art that works on the eye directly. Precise geometric patterns, usually in black and white or in strong contrasting colors, make a flat surface seem to bulge, ripple, flicker or move.

Victor Vasarely explored these effects from the 1930s, and Bridget Riley’s black-and-white paintings of the early 1960s, such as Movement in Squares (1961), became some of the best-known examples. The name “op art” appeared in Time magazine in 1964, and the Museum of Modern Art’s exhibition The Responsive Eye, in 1965, brought the movement to a wide audience. Its patterns then spread quickly to fashion, record sleeves and advertising.

How the illusion works

Our visual system is built to find edges and movement. When a pattern of high-contrast lines changes slowly in spacing, direction or thickness, the eye can’t settle on it: it reads curves that aren’t drawn, depth on a flat page, or a shimmer along the lines. Small changes repeated many times do the work; no single line is curved.

This tool uses that principle. Vertical stripes are cut into horizontal bands, and each band is shifted a little more than the one above it. Nothing outlines the shape, yet the shifts add up into a diamond, a circle, a square or a star. Thinning the stripes from left to right adds a second movement across the frame, and the drift animation keeps the pattern from ever standing still.

What each setting changes

The presets are Classic yellow, Red circles, Cobalt square and Acid star.

• Shape: diamond, circle, square or star, the figure the shifted bands draw.
• Stripe spacing and Band height: the width of the stripes and the height of each shifted band. Small values give a finer, stronger vibration.
• Thickness and Left-to-right taper: how much of each stripe is ink, and how much it thins across the frame.
• Drift speed: how fast the pattern moves. Zero gives a still image.
• Ground and Stripe: the two colors.
• Seed and Generate: a new variation of the pattern in one click.

What designers use it for

• Posters and covers that need to grab attention from a distance.
• Looping backgrounds for events, stages, music visuals and social video.
• Brand patterns in two brand colors, for packaging, tote bags or wrapping.
• Transitions and title cards in motion design.

Tips

The illusion is strongest with high contrast: black on yellow or white, or two colors far apart in brightness. Two colors of similar brightness, even if they look very different, flatten the effect. Fine stripes vibrate more but can blur once a video is compressed, so test your export on the screen it is meant for. Keep the drift slow for backgrounds behind text.

Your own op art tool

The request that made this tool is the single sentence on the button above. Change it to the effect you have in mind, like moiré circles, a checkerboard that bulges, or type made of lines, and Blueprint builds a tool with its own controls. The two tools further down were made the same way.