I am working on an application that needs to show users their currents status / progress in performing a task on a number of items. There are three states that each item can have:
- New (blue) - Item has not been seen or processed yet
- Good (green) - Item has been processed in the past, and has no pending task associated with it
- Due (red) - Item has been processed in the past, but has a pending task associated with it
For a quick overview of collections of these items, a multi-part progress bar is being used. The image below shows 4 such possibilities for these bars.
My concern is that some of the colours don't work well next to each other - especially for colourblind people.
What can I do to make this easier on the eyes, and more accessible?