Friday, three in the afternoon: you have a meeting. At six in the evening you are meeting an old friend for coffee, and you have only one jacket to wear to both. That is exactly where a blazer shines: one piece, many settings. Knowing how to style a men's blazer is not hard; it takes only a few formulas and one rule about contrast. The eight formulas below run from the office to a night out.
Quick answer
A men's blazer goes with khaki trousers, trousers in a different colour, chinos or dark jeans; underneath goes a shirt, a fine-gauge knit or a plain T-shirt. The main rule: blazer and trousers should differ by at least one step in depth of shade, with no more than three dominant colours and only one patterned piece.
How a blazer differs from a suit jacket
A blazer is a separate jacket, not paired with trousers in the same cloth the way a suit is, so it is more flexible: a softer material, possibly patch pockets and metal buttons. Precisely because it is not “matched,” a blazer lets you pair it with many kinds of trousers. How to choose a blazer is covered in detail in how to choose a men's blazer.
8 formulas for styling a men's blazer
| Formula | Blazer | Underneath | Trousers | Occasion |
|---|---|---|---|---|
| 1 | Navy | White shirt | Beige khakis | Smart-casual office |
| 2 | Grey | Light blue shirt | Navy or dark grey trousers | Meetings, client visits |
| 3 | Caramel brown | Cream shirt | Grey trousers | Creative workplace, coffee |
| 4 | Navy | Thin crew-neck sweater | Grey chinos | Weekends, cool weather |
| 5 | Black or navy | Plain T-shirt | Dark jeans | Going out, dates |
| 6 | Checked | Plain shirt | Plain dark trousers | Dates, light parties |
| 7 | Teal | White shirt | Grey trousers | Events, work with an accent |
| 8 | Beige or cream | Light blue shirt | Cream or white pleated trousers | Hot season, travel, outdoor parties |
Formula 1: Navy blazer, white shirt, beige khakis
A classic trio. Cool navy meets warm beige khaki, with the white shirt linking the two. Wear brown loafers or brown derby shoes, with a belt in the same colour.
Formula 2: Grey blazer, light blue shirt, trousers in a different colour
Use trousers in navy, or a grey darker than the blazer, to create depth. This is a “nearly a suit” way of dressing when you do not want the whole outfit in one colour.
Formula 3: Caramel-brown blazer, cream shirt, grey trousers
A warm palette for those who like a lightly retro style. Keep accessories simple, such as a brown belt and a leather-strap watch, with no tie.
Formula 4: Navy blazer with a thin sweater
A thin crew-neck or polo-collar sweater in place of a shirt gives a warm, soft feel. Good for days with cold air-conditioning, or for weekends.
Formula 5: Blazer with a plain T-shirt and dark jeans
The “smart night out” formula. A plain crew-neck T-shirt, well fitted and in a substantial fabric; dark jeans that are not ripped; plain leather sneakers or loafers.
Formula 6: Checked blazer, plain shirt, plain dark trousers
Put the check pattern on the blazer only. Plain shirt, plain trousers, minimal accessories. Beginners should choose a small check in a muted colour.
Formula 7: Statement-colour blazer, everything else neutral
A teal, burgundy or moss-green blazer as the accent; a white shirt and grey or navy trousers beneath. One piece stands out, and the rest step back.
Formula 8: Light blazer for the hot season
Beige or cream, in breathable linen or cotton; a light blue or white shirt; trousers in the same light palette. Wear the whole outfit light, but vary the shades so it does not “blur” together.
Shoes, accessories and season: three layers of detail
The right formula is not enough if the shoes and accessories are out of step. These three layers of detail complete the outfit:
- Shoes matched to formality. Derby or oxford shoes for work and meetings, loafers for weekends, plain leather sneakers for going out. The shoe colour should match the belt.
- Just enough accessories. A plain-coloured pocket square and a simple watch are enough. A blazer with patch pockets usually suits a more relaxed style, so it needs no pocket square.
- Fabric by season. In hot weather choose a linen, cotton or lightweight wool blazer in a light colour; in cool weather choose wool, flannel or tweed in deeper colours. With the same colour formula but a different cloth, you can wear it year-round.
The contrast rule between blazer and trousers
This is what decides whether an outfit looks “intentional” or “thrown together”:
- One step apart in depth of shade. If the blazer is dark, the trousers should be a little lighter, or the reverse. Two pieces of the same depth but different colours easily look mismatched.
- Do not wear a blazer with trousers of the same colour and the same cloth. Done that way, onlookers will assume a suit has been split up. Choose trousers in a different shade or a different cloth.
- At most three dominant colours. Blazer, shirt and trousers make three; shoes and belt follow the tone.
- One patterned piece. With a checked blazer, keep the shirt and trousers plain.
- Blazer length covering the seat, trousers touching the shoe. A blazer that is too long makes the legs look shorter; one that is too short looks like it belongs to someone else.
Tips from Mon Amie's master tailors
- Choose a blazer by its shoulders. If the shoulders fit, the rest can be adjusted; if they are too wide or too narrow, it looks off however you style it.
- A well-fitted navy blazer in breathable wool is the first piece worth buying. It works with all eight formulas above.
- Shoes set the level of formality. Lace-up leather shoes are formal, loafers are in between, and leather sneakers are relaxed.
- A common mistake: wearing a blazer with ripped jeans and chunky sports shoes. The two opposite extremes make the outfit look unintentional. Keep at least two smart pieces and one relaxed piece.
To feel the cloth and its drape in person, you can browse the pieces in our products, or book a fitting to have a blazer made to fit you through our bespoke tailoring service.
Frequently asked questions
What trousers look best with a men's blazer?
Khaki trousers, chinos, trousers in a different colour or dark jeans are the four easiest options. Keep a difference in depth of shade between the blazer and the trousers.
Can you wear a men's suit jacket with khaki trousers?
Yes, especially a navy or brown blazer with beige, grey or olive khakis. Avoid wearing the jacket of a suit with khakis, because the differing materials will look mismatched.
What should you wear with a blazer to work?
A white or light blue shirt, dress trousers or chinos, and leather shoes or loafers. Navy and grey are the two safest blazers for work.
What do you wear a men's blazer with when going out?
A plain T-shirt, dark jeans and leather sneakers; or a thin sweater with chinos. Keep the blazer as the main piece and the other pieces simple.
Conclusion
Knowing how to style a men's blazer really comes down to remembering one rule, a one-step difference in depth of shade, and a few formulas to hold on to. Once you are used to it, you will start creating your own. If you want to read further on colour, what to wear with a black blazer is a good place to start, or see the lookbook for inspiration.