Erin If it is just a few splatters, I would try WD-40. If it is completely covered, I would recommend calling a paint dealer. Sherwin Williams are really good here in OH. They always have a good solution for any paint type problems & are more professional & easier to obtain info from than the big box stores.
Goof-off is great! Other brands are OOPS! and the Undu that scrapbookers use for removing adhesive from photos. These products get off latex paint splatters and other stains that mineral spirits either won't work on or are not safe to use on. My husband is a painter and we have this stuff at home at all times.
My hubby works on floors and I ask him he said that if it has soaked in it more than likely wont come off but said to try goof off or laquer thinner. Sure hope it works for you!