Color blindness affects roughly 1 in 12 men and comes in several forms — red-green (most common), blue-yellow, and full color blindness. Polypane offers eight built-in color blindness simulators (covering both mild '-omaly' and severe '-opia' variants) accessible via its Debug Tools panel in three clicks. The key design takeaway is to never rely on color alone to convey information — pair color cues with text or icons. Beyond color blindness, Polypane also simulates other visual impairments like glaucoma, tunnel vision, and dyslexia to help developers empathize with diverse user experiences.
