For an outfit that's super straightforward but can be smartened up or dressed down in many different ways, wear a dark purple plaid wool blazer and navy chinos. For something more on the sophisticated side to finish this getup, complement this look with a pair of dark brown leather oxford shoes. It's a wonderful pick when it comes to picking out a well-coordinated outfit for summer-to-fall weather. Perfect if you're looking for some amazingly inspiring style for 30-year-old men.