How to increase the contrast in macOS 11 Big Sur

Before increasing contrast

After increasing contrast

1. Select the Apple icon  in the top left corner of the screen.
2. Select System Preferences from the menu.
   
3. On the System Preferences window, select the Accessibility icon.
   
4. On the Accessibility screen, select Display in the left column.
   
5. In the right column, make sure the Display tab is selected.
   
6. Tick the checkbox for Increase Contrast.
   
7. Note: When you enable Increase Contrast, transparency is automatically reduced to make items clearer to see and read.
   
8. When you are finished, click the Close (red) button in the top left corner of the System Preferences window.

Note: If this does not work it could be because someone else manages your computer settings (an IT department or administrator). If this is the case, you will need to contact them to access these settings or for further help.