This combo of a grey polo and black and white chinos is a safe and very stylish bet. And if you wish to immediately perk up your look with footwear, why not complement this ensemble with a pair of loafers? Semi-formal combos for stylish 30-year-olds aren't actually that hard.
To don a casual getup with a modernized spin, rock a white long sleeve shirt with black and white chinos. You could perhaps get a little creative in the shoe department and go for loafers. This combination illustrates that figuring out fashion at age 30 is not that daunting a task.
To create a laid-back outfit with a twist, dress in a light blue long sleeve shirt and black and white chinos. Go the extra mile and break up your ensemble by slipping into a pair of loafers. As a young gent, you want to start dressing more like a mature gentleman. That's when inspiration like this proves very useful.
For an ensemble that's smart and GQ-worthy, pair a grey blazer with black and white chinos. When it comes to footwear, go for something on the more elegant end of the spectrum by finishing with loafers. This outfit illustrates that in your thirties your sartorial options are looking great.
A tobacco polo and black and white chinos are a savvy pairing to keep in your day-to-day fashion mix. A pair of loafers immediately boosts the fashion factor of this getup. As a 30-something man, you probably want to start dressing like an adult man. In this case, ensembles like this are ideal as inspiration.