I’m going to create GUI for a mobile app that will work in bright sunlight environment (inside a car so it will not be fully exposed to sunlight) and the usability and visibility of certain GUI elements are the most important factors.
What are some tips for creating such UI? What colors should I use?
A car’s cockpit is a good orientation aid for this. Aim for high contrast. Black background and possibly white graphics/text. Black absorbs sunlight so it isn’t reflected back to the user. Colored elements need to be a little bit larger than normal.