Who Can Use
A tool that simulates how color contrast affects people with visual impairments, helping designers and developers create accessible web content.
Score
60
User Rating
3.0
Free/Trial Support
Supported
Starting Price
--
Last Updated
Oct 24, 2026
Overview
What is Who Can Use?
Who Can Use is a web-based tool that brings attention and understanding to how color contrast can affect different people with visual impairments, such as color blindness, cataracts, glaucoma, and low vision. It uses WCAG guidelines and simulations to provide grades for color combinations based on contrast ratios, text size, and weight.
What is Who Can Use used for?
Tags
Top Features
- Color contrast ratio calculation
- WCAG grading simulation
- Visual impairment simulations (e.g., color blindness, cataracts)
- Situational event simulations (e.g., direct sunlight, night shift mode)
- Open-source on GitHub
How to use Who Can Use?
Enter two HEX color values to calculate contrast ratios and see how they appear to people with various visual impairments. The tool provides WCAG grades and simulations for conditions like protanopia, deuteranopia, and situational events like direct sunlight or night mode.
Alternative Tools
No alternative tools found
Pros & Cons
Pros
- Improves web accessibility
- Easy to use with HEX inputs
- Free and open-source
- Educational for understanding visual impairments
Cons
- Limited to color contrast analysis
- No advanced customization options
Use Cases
- Designing accessible websites
- Testing color combinations for compliance
- Educating teams on accessibility
Who Can Use Pricing
Free Plan
No detailed pricing information available
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