Is there a hard cap on the amount of provinces?

[dayalu]

In EU4 CK2 and HOI4 is there a limit to the number of provinces that can be added? I would appreciate a official response if possible. I am one of many assistants on a overly ambitious mod, and if there is a limit we will hit it at some point. It would be better to know sooner rather then latter if we should scale back, or push forward.
Thank you for your time.

 

[mccarty.geoff]

Good question. There are only 16,777,216 possible true color values.