is any WCAG criteria to account both default and Dark mode for content

Hi!
I am looking for clarification on if any WCAG requirement if users
switch to dark mode on mobile devices.

for emails, you know how mobile can switch to dark mode.
sometimes code doesn't account for the dark mode and now there are color
contrast issues with the text
is there currently a WCAG requirement for emails to ensure that they're
coded to swap colors for dark mode?

Please suggest. appreciated your guidance on this.
Have a good weekend all.


Thanks!
~ Kiran