[elefantastisch]

https://coolors.co/ can suggest colors to go with user-entered colors.

No affiliation, just a tool I've used.

[DarwinMailApp]

A fantastic tool! Thank you for sharing.

The only drawback is that I cannot see the colors on the UI (on a sample website) like I can with Happy Hues. Granted, I can copy them into my website to test out.

I just love how easy it is to use Happy Hues.