I'm no expert at color negative film (I shoot mostly B&W). A few things you may want to think about
-make sure your light meter is working properly. I think that under exposing color negative film can leave you with some weird color casts and possibly muted colors as well.
-make sure the film is fresh.
-shoot another roll and send it off to a reputed lab. I've never sent film off, but someone will be able to give a good lab to send it to. Go ahead and ask for a set of prints as well as scanning.