For a casually classy ensemble, choose a navy blazer and charcoal chinos — these items work pretty good together. Up the style ante of your ensemble by slipping into a pair of derby shoes. If you're wondering how you should dress as a young gent, this outfit gives a good idea.
Charcoal Chinos with Derby Shoes Dressy Warm Weather Outfits In Their 30s
This combo of a navy double breasted blazer and charcoal chinos looks elegant, but in a modern way. Derby shoes are a simple way to upgrade this look. An ensemble like this will help any 30-year-old guy outdo his younger fellows.