Color Blindness Simulator

by Color Blindness Test · colorblindnesstest.org · Education

Established publisherManifest V3 Free

View in Chrome Web Store Data as of 15 Oct 2026

Simulate different types of color blindness on web pages.

Users

151

+3 in 30 days

Rating

5.0 / 5

unchanged in 30 days

Ratings

0 in 30 days

Store rank

#71K

#60K among extensions

Version

1.1

updated 2 Jun 2025

Users

monthly, 17 months

Latest, 15 Oct 2026: 151 usersMove the mouse over the chart for any month

Ratings count

monthly, 17 months

Latest, 15 Oct 2026: 1 ratingsMove the mouse over the chart for any month

The Chrome Web Store rounds user counts down to the leading digit, so the user line moves in steps. The ratings count is exact and is the better signal of real adoption.

About Color Blindness Simulator

Color Blindness Simulator is a Chrome extension designed to help developers, designers, and accessibility testers visualize how websites appear to users with various types of color vision deficiencies. With this tool, users can apply real-time color blindness filters to any webpage and simulate common conditions like: Protanopia (Red-Blind) Deuteranopia (Green-Blind) Tritanopia (Blue-Blind) Achromatopsia (Complete Color Blindness) The extension works instantly on any active tab, allowing side-by-side visual comparisons and quick toggling between modes. It supports intuitive switching between filter types and requires no additional setup or page reloads. Key Features: Live simulation on active webpages Multiple color blindness modes One-click activation and deactivation Optimized for performance and low memory usage Clean, user-friendly interface This tool is especially useful for web developers and UI/UX designers aiming to make their websites more accessible and inclusive to the 300+ million people worldwide who are affected by color blindness. We kindly request your review and approval of this extension to support developers in building a more inclusive web.