Go for a blazer and grey wool dress pants and you'll ooze class and refinement. Introduce red brogues to the equation to make a sober outfit feel suddenly fresh. This pairing illustrates that as a guy in his 30s, you have a wide range of styling options.
For an ensemble that's super simple but can be dressed up or down in plenty of different ways, consider wearing a blazer and olive chinos. To add some extra flair to your getup, add a pair of red brogues to the equation. An ensemble like this will help any 30-something Millennial gentleman outdo his pals.