Steps to reproduce the issue

1. add the class text-muted to any element in the atum template

Version

5.4

Expected result

contrast that passes wcag aa

Actual result

contrast is only 3.2:1
it should be at least 4.5:1

What device were you using? (eg, phone, laptop)

desktop

What web browser were you using? (eg, Chrome, Safari)

chrome Windows

Assistive Technology?

No response

Additional Comments

This was raised previously by @chmst but closed #41196

There are also two competing css in atum (both fail) not sure why

it is ok in dark mode