The color-blind simulator and contrast checker for Sketch. Design with accessibility in mind.

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We recommend installing via Sketch Runner, Sketchpacks, or Sketch Toolbox by searching for Stark.

Check your designs directly in Sketch

Using the preview window, select from the simulator and contrast checker to ensure your design is as great for those who don’t see the way a typical person does.

Select from 8 color profiles

Simulate the various forms of color-blindness by quickly previewing your designs and make adjustments as needed.

Integrated contrast checker

Ensure your colors, visuals and typography work hand in hand, providing great readability, legibility and contrast.