Spectrum
Developer Tools
Instantly test your web page with different types of color vision deficiency.
Users
10K
Rating
3.8
Reviews
56
7D Growth
0|0%
Stable signalNo paid features detectedHigh-risk permissions
Colorblindly
Simulates colorblindness in your web browser.
Users40KCurrent public install base
Rating3.5Store average score
Reviews51Public review volume
Manifest versionV3Extension platform version
7-day growth0Net users gained this week
7-day growth rate0%Relative weekly velocity
Preview
3 assetsColorblindly Media preview
Trend
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7-day rating change
Start
3.53
Latest
3.53
7-day rating change
0.00
2026年7月14日2026年7月20日
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1-day growthFlat
00%7-day growthFlat
00%30-day growthDeclining
-40K-50%Technical snapshot
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Version2.5
ManifestV3
Size85.17KiB
Languages1English
Published
Store updated
Last crawled
English
Overview
Product summary
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Colorblindly is an extension that helps developers create websites for the people with colorblindness by allowing them to simulate the experience those users have on websites.
There are 8 different settings to experience:
-Blue Cone Monochromacy / Achromatomaly
-Monochromacy / Achromatopsia
-Green-Weak / Deuteranomaly
-Green-Blind / Deuteranopia
Reviews
Recent review snapshot
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Store average score3.5Chrome Web Store aggregate rating, including ratings without synced review text
Synced text average3.4Average computed only from synced review bodies below
Reviews with text44Synced review bodies
Total ratings / reviews51Chrome Web Store public rating/review count
Store average score: 3.5. The bars below are calculated from synced review text only, so they may be empty for extensions that have public ratings but no synced comments yet.
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Works perfectly!!
Good. This is the first extension I've seen that uses the proper Brettel model for deuteranopia & protanopia. Most of the other simulators out there are substantially incorrect. Designers should look at the protanopia simulation in particular, to ensure that their designs are accessible and readable.
Just started to use the extension, and I see my site exactly as several real people with different types of color blindness described it, and now I understand what they mean and how to fix it. Very useful tool!
Works great for me! Using an older version of Chrome on an old Mac.
This extension changed me and my cats life forever.
Super handy tool for checking accessibility when designing and developing sites. It has helped me explain to customers why colorblind accessibility is important when designing a website.
Amazing
It didnt work what so ever. Can you please notify me on how to use it because ive done everything im meant to do
Works great, using it on windows 10 64-bit and there's no problems
Nice tool, doesn't work on locally opened pages on Windows 10-x64 making it less useful for web development.