Principle supports Dark Mode, so you can add both a regular publication logo and a logo for a dark mode.
Go to Settings > Design & branding from the admin menu
Click Brand in the Design settings sidebar on the right
Click Upload logo button in the Publication logo menu item
Click Site-wide in the Design settings sidebar on the right
Click Upload image button in the Resize logo menu item
Click Upload image button in the Dark mode logo menu item
Click Upload image button in the Resize dark mode logo menu item
Last updated 1 year ago