Autumn weddings are a whole mood. The air’s cooler, the light’s golden, and the leaves look like they’ve dressed better than most guests. And when it comes to your suit? Well, the stakes are higher than the best man’s speech.

If you’re a groomsman, your job isn’t just to smile in photos and keep track of the rings. You’re part of the wedding’s aesthetic. The wrong colour, and you’ll clash harder than pumpkin spice in July. The right one, though? You’ll look sharp, seasonal, and Instagram-ready.

Best Suit Colours for Groomsmen at Autumn Weddings

Choosing the perfect colour for your custom suit is like picking the right playlist for a road trip: it sets the tone. Here’s the breakdown of shades that practically scream “autumn sophistication” without actually screaming.

Navy Blue

Let’s start with the MVP. Navy is the Swiss Army knife of suit colours. It works for city hotels, countryside barns, formal evenings, you name it. And in autumn? It’s even better. Why? Because it plays so well with seasonal accents.

Pair a navy custom suit with a burgundy tie, maybe a copper-toned pocket square. Want to level it up? Add a waistcoat in the same shade for a three-piece look that feels sharp but not showy.

What about fabric? Skip shiny finishes; they belong to summer weddings. Instead, go with wool or flannel for warmth and texture. Oh, and ditch the plain black shoes. Dark brown or oxblood leather adds that rich autumn vibe.

Savile Navy Blue Wool Blend Suit (Photo: Azazie)

Charcoal Grey

Charcoal is like that guy who doesn’t talk much but always lands the perfect joke. It’s sleek, formal enough for black-tie vibes without being stiff, and works beautifully in cooler weather.

To keep it from looking too businesslike, bring in colour through accessories. A deep green tie, a patterned pocket square, maybe even bronze cufflinks. If you want extra style points, choose a fabric with subtle texture. Think herringbone or a micro-check. It says “I’ve got taste” without shouting from the altar.

Where does charcoal shine? Indoor evening weddings, historic estates, or anywhere the lighting is moody and romantic.

Savile Charcoal Wool Blend Suit (Photo: Azazie)

Forest Green

This is the colour that says, “I read the brief and came to impress.” Forest green feels bold but not outrageous, and nothing nails the autumn aesthetic like it.

Picture this: a deep green custom suit in wool, paired with a crisp white shirt, brown brogues, and a golden tie bar. Add a boutonniere with a sprig of eucalyptus, and you’re basically a walking Pinterest board.

It works best for outdoor or rustic venues, places with wood beams, stone walls, and enough candles to qualify as a fire hazard. And if you want to stand out even more? Go three-piece or throw in a contrasting waistcoat in a warm neutral.

Savile Teal Wool Blend Suit (Photo: Azazie)

Burgundy

Burgundy is the showstopper. The risk-taker. The colour that, when done wrong, makes you look like a magician, but when done right, makes you look like a style icon.

If you’re thinking of a full burgundy suit, keep it dark and matte. No shiny fabrics. This isn’t prom night. For accessories, stick to muted tones so the colour does the talking. Black shoes work here, but dark brown or oxblood feels richer.

Not ready for head-to-toe burgundy? That’s fine. Work it in through ties, pocket squares, or even a waistcoat under a navy or charcoal jacket. It’s the kind of detail that photographs beautifully and makes you look like you know what you’re doing.

Other Autumn-Ready Options

• Brown or Camel: These are perfect for rustic or vintage-inspired weddings. Pair with tweed or textured fabrics for maximum charm.
  
• Mid-Grey: Great for daytime or casual weddings, especially if the theme is minimalist.
  
• Black: Leave it for the groom or a very formal evening affair. On a groomsman, it feels a little too “funeral chic.”

William Black Comfort Blend Suit (Photo: Azazie)

Fabric and Styling Details That Make the Look

Colour sets the tone, but fabric and details bring it home. Autumn weddings call for warmth, depth, and texture. If your suit looks like it could double as office wear, you’re doing it wrong.

The Fabrics That Work

Skip shiny finishes. Go for wool, tweed, or flannel, fabrics that feel substantial and seasonal. Patterns like herringbone or a soft check give your outfit character without screaming for attention.

Savile Light Blue Wool Blend Suit (Photo: Azazie)

Accessories: Small Pieces, Big Impact

Accessories are where you bring personality to the party. Burgundy silk ties, forest green pocket squares, copper cufflinks. These are your autumn best friends. And don’t forget the boutonniere. A small arrangement of dahlias or seasonal berries adds charm that ties the look to the wedding theme.

Shoes and Layers

Swap out black shoes for something richer: deep brown, oxblood, even tan for lighter suits. Layers matter, too. A waistcoat adds depth, while a knit tie can bring subtle texture. These details are what turn a “nice suit” into “best-dressed groomsman.”

What About the Groom and Guests?

The Groom

You’re the star. You need to look different, but not like you’re at a different wedding. One easy trick is staying in the same colour family as the groomsmen, but with elevated details.

For example, if the groomsmen wear navy, you could choose midnight blue with a textured waistcoat. If they’re in charcoal, consider a patterned fabric or a velvet bow tie for extra luxury.

Custom suits are the way to go here. You can add a unique lining, monogram the inside pocket, or play with lapel shapes. Subtle details that make your suit unmistakably yours, without looking like you raided a costume shop.

Wedding Guests

Guests, you’ve got freedom, but not too much. Rule number one: don’t dress like the wedding party unless you’re trying to sneak into their photos. Instead, lean into softer shades like mid-grey, beige, or even muted blue.

Add autumn touches with accessories: patterned socks, a tie in burnt orange, a pocket square in wine red. And think about the venue. Barn wedding? Textured fabrics like tweed. Sleek hotel? A tailored navy or charcoal suit with polished leather shoes.

If you’re unsure, navy or charcoal with seasonal accessories is your safety net. It works 99% of the time and never looks out of place.

James Tan Structured Stretch Suit (Photo: Azazie)

Final Thoughts

Autumn weddings are a playground for rich colours and textured fabrics. For groomsmen, think navy, charcoal, forest green, or burgundy, and then add seasonal accessories to make it pop. Custom suits take it to another level, giving you the fit, fabric, and personal details that turn a good look into a great one.

Whether you’re the groom, the guy holding the rings, or the guest who came for the cake, your suit should match the season’s elegance. Get the colour, fabric, and accessories right, and you won’t just attend the wedding. You’ll own every photo you’re in.