A person is wearing a ocean blue, point-collared button-up shirt with a slightly textured cotton fabric, tucked into beige, slim-fitting trousers with a subtle texture, and paired with brown leather belt and taupe loafers with a minimalist design.

For a polished yet relaxed evening look, suggest adding a navy blazer made from lightweight wool to create a sophisticated layer without overwhelming the outfit. Swap the taupe loafers for dark brown leather brogues to elevate the ensemble. Accessorize with a sleek stainless steel watch and a beige pocket square with a subtle pattern to tie in the trousers and belt. This combination blends elegance with casual touches, perfect for a semi-formal occasion.