When designing interfaces or layouts for the color blind, you can rely on the Lens tool to simulate their vision. This gives you a real-time view of the desktop as seen from the eyes of the color blind person.
Turning on the simulation allows you keep a check on your color-based visual cues. You can make sure that you don’t rely on deep reds or greens for indicating state changes. If needed, you can think of adopting other strategies for showing visual feedback.
There are 7 kinds of vision simulations that are available, as seen in the menu below:
Here’s the same view as seen under different simulations: