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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色弱の日本人です。 この拡張機能を使用して色弱テストを試しにやってみると、 絶対にこうだと思っていたものが完全に覆されました... いい体験をさせていただいたということで今回は星5にさせていただきました。 Thank you for make plugin !!
Most of the other extensions I found manage to really mess up the page layout or only include the most common types (Tritanopia, Deuteranopia, and Protanopia). This simulates 8 types and doesn't seem to destroy page layouts. This is a great extension, I highly recommend it.
Amazing! Exactly what I needed for this new web application that I'm working on!
A lovely little extension to use. Very interesting even if you're not trying to maximize accessibility for your site. I know nothing about colorblindness, so I can't make a judgement as to the "accuracy" of the various types of colorblindness you can set, but to my untrained eye (hah!) it looks fairly comprehensive. Great work!