It is usually called a business suit today, a sign that many of us have forgotton that the suit was worn daily by our anglo-influenced predecessors. Indeed, the most interesting examples of the genre to my mind are the non-business suits of the past, like the pair worn by the (American) footballers in the 1936 Esquire illustration. Such suits remain appropriate as well as interesting for daytime occasions ranging from holiday gatherings to museum going.
The components of the non-business ensemble are well represented in the illustration. They include the patterned suit in tweed or flannel, brown blucher shoes (with double or crepe soles), colored shirts, wool or cashmere neckties, and silk pocket squares. The combination looks great, wears warm enough for the season, and provides storage for all of a man's stuff in its many pockets.
Consider the non-business suit.