Upvote:2
Yes it is. Although Croatia is not (yet) part of the Schengen area, you are allowed to enter the country with a valid Schengen visa.
http://www.mvep.hr/en/consular-information/visas/visa-requirements-overview/
In fact, as you can see on the link above, even visas for Bulgaria,Cyrpus and Romania will grant you the same privilege.