Op-Art Bulge Pattern – Medium #7

Tip: tap a color, then tap any shape to fill it. Your coloring is saved on this device automatically. To color on paper, download the Letter or A4 PDF and print it at 100%.

Up nextOp-Art Spiral Pattern – Medium #8 →

A checkerboard grid that swells outward in one place. Color alternate squares dark and light for a striking 3D bulge. The medium version adds a second layer of detail for a calm 30 to 60 minutes of coloring. Tap any shape to fill it online, or print the page.

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Printing tips

  • Repeat the same two to four colors in every tile for a calm, tiled look.
  • Fine-tip markers or sharp colored pencils make the small shapes on hard pages easier to fill.
  • For op-art pages, alternate a dark and a light color to make the pattern pop.