WhoCanUse

WhoCanUse is an app that raises awareness about how color contrast impacts individuals with visual impairments, aiming to enhance web accessibility understanding.

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For web designers and developers choosing accessible colors, WhoCanUse helps reveal how a text-and-background combination may appear to people with different visual impairments or in changing screen conditions. Enter foreground and background colors, adjust sample text size and weight, and see the contrast ratio and WCAG grade. The results include visual previews for color-vision differences, cataracts, glaucoma, and low vision, as well as simulated direct sunlight and Night Shift mode. Use WhoCanUse to compare color combinations and consider how readable they may be for different people—not just how they appear under typical viewing conditions.

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