Tag Archives: colour blindness

Good use of colours when thinking about Colour Deficiency

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Color Oracle menu with view of colour palette
Color Oracle menu for making a choice of colour filter.

 Bernie Jenny from Monash University in Australia has developed Color Oracle as a free colour deficiency simulator for Windows, Mac and Linux. When designing any software, apps or websites it allows you to check the colour choices.

This download works on older operating systems as well as the latest ones using Java, but it is important to follow the developer’s instructions for each operating system. It is very easy to use on a Windows machine where the app sits in the system tray and can be used at any time when testing colour options by selecting an area on the screen.

Another trick when designing web pages or other documents is to view them in grey scale or print them out to test readability.

This strategy comes thanks to Andy Eachus at University of Huddersfield.

Colours for Presentations

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“It wasn’t until I had my vision tested that I discovered I had a green colour deficiency and so colour overload is a problem, such as occurs in some pie-charts. I tend to use blue as this is usually a safe colour for presentations and when developing web pages if you have a colour deficiency – blue, pale colours.  When items are highlighted, the text goes white on a blue background.


To show you how this looks I have made a PowerPoint presentation about colour deficiencies – it is available for download from Slideshare.”

Jim – Computer Science.