Role Color Contrast Checker

A huge problem I have encountered frequently on Discord is visual accessibility when it comes to the contrast of role colors.

Now, I know that it's up to admins / server owners to set the colors, and there is a preview below the color selector to show how the color will look on light and dark themes.
This is a *great start*. However, I still see many roles that I am completely unable to read due to my visual impairment, because they are too dark and / or saturated. Especially blue and red, fully saturated roles.

It would be a great help to me and likely many others if Discord could add a contrast ratio checker, something like Chrome dev tools, where it will display the current contrast ratio, as well as a line on the color picker displaying which colors will be acceptable.
Perhaps display a warning to the user selecting the color if the color they selected may cause accessibility issues for some users, and urge them to reduce saturation or increase lightness, etc.

There is a user option in accessibility to display the role color next to the name, which granted, does help with this. But it looks much worse imo, and it'd be amazing to have a second solution to help solve the problem and perhaps spread awareness of visual impairments. 

Thanks for coming to my TEDx talk!