SUMMARY

Color Vision Deficiency (CVD) affects people’s ability to distinguish certain colors. Estimates indicate that approximately 200 million people worldwide are affected by some kind of CVD. Individuals of Northern European ancestry, as many as 8 percent of men and 0.5 percent of women experience the common form of red-green color blindness.

This extension helps you to test web pages for people with different types of CVD. It's particularly useful for websites with data visualisations, because some colors may not be distinguishable from other colors in the charts.

Flash enabled websites are also supported!

The Spectrum extension was removed from the Chrome Web Store on 2023-08-31. At the time of removal, it had 22376 users. The initial version was launched on 2017-01-11.

HOW TO INSTALL Spectrum FROM A CRX FILE

1. Download Spectrum CRX file
2. NOTE: Sometimes the browser may block downloading / installing CRX file from outside the Chrome Web Store. If so, you may need to download the ZIP file instead
3. In the URL bar, go to chrome://extensions
4. Enable Developer mode

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