Color Oracle is a free color blindness simulator for Windows, Mac and Linux. It takes the guesswork out of designing for color blindness by showing you in real time what people with common color vision impairments will see.Color Oracle applies a full screen color filter to art you are designing, independently of the software in use. Eight percent of all males are affected by color vision impairment – make sure that your graphical work is readable by the widest possible audience.

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Version 1.3, May 5, 2018.

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Colour Oracle for Windows and Linux requires Java 6 or higher.



macOS 10.15 Catalina users, please see the manual for fixing a common issue.





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Read this article for more information: Color Design for the Color Vision Impaired Development: Bernie Jenny , Monash University, Australia.Ideas, testing and icon: Nathaniel Vaughn Kelso , California.Color Oracle is a work in progress and will improve with time and your input. Please share your Color Oracle testimonial with us and send us an email Color Oracle is open source, available on GitHub for Mac and Windows/Java