The all-rounder
A navy jacket, grey trousers, a white shirt, dark leather shoes and a calm pocket square. This works almost anywhere an invitation asks for cocktail attire. A navy or burgundy tie adds formality. To make it half a step more relaxed, swap the white shirt for a light blue one.
The evening version
A charcoal or navy suit, a white shirt, black shoes and a textured tie. This is a good option for a hotel reception, a company celebration or an event where most guests will be in suits. To keep it from feeling heavy, get the fit right and add a lighter accent, such as a white or pale blue silk pocket square.
The afternoon version
A jacket in a lighter shade, trousers in mid-grey or beige, a light blue shirt and brown shoes. It suits spring and summer receptions, especially when part of the event is outdoors. The trousers must look elegant and the shirt collar must hold its shape. Add character with the texture of a tie rather than a loud jacket pattern.
The version with character
A double-breasted jacket or one with a discreet pattern, plain trousers, a white shirt, dark shoes and a pocket square in a calm colour. A double-breasted jacket is formal in itself, so the accessories should be quieter. It is worn buttoned, and the cut neatly defines the line of the chest and waist. If you prefer a pattern, consider a navy jacket with a paisley pattern, made to be worn at parties and evening events, among other occasions. Then the pattern is the only strong accent, and the shirt, trousers and accessories stay plain.