That would seem a pretty loud suit. In either case, I agree with most commenters that it probably looks better than it wears, I'd probably have a tough time matching it. I'd think black pants and not ever sure about a shirt, but in either case something less casual than a suit. Still may work for a guest at a wedding, however. May work as "cocktail attire," if outfitted successfully.Looks like an orphaned suit jacket. I wouldn’t wear it anywhere without the matching pants.