Light/dark hex for roles

A lot of times, I find a certain hex is the perfect color for dark mode but doesn't contrast well with light mode. For example, a light blue works well with dark mode, but coming to light mode users, it looks really bad against the white background.

Maybe a new feature could be adding a corresponding light-mode hex to a role. So a user could set the hex as light blue for dark mode, but dark blue for light mode. 

I feel like this would be beneficially inclusive for light mode users, and will avoid trouble with determining what a role is against a light background (found this to be true with yellows).