For a look that's pared-down but can be manipulated in a multitude of different ways, try pairing a grey v-neck t-shirt with white chinos. Tan fringe suede loafers are guaranteed to give a dose of sophistication to your ensemble.
Grey V-neck T-shirt with White Chinos Smart Casual Outfits
This combination of a grey v-neck t-shirt and white chinos is hard proof that a pared down off-duty outfit can still be really interesting. Why not take a classic approach with shoes and complement this look with a pair of black leather loafers?