One of the factors that makes the navy blazer a staple for both men and women is its extreme match-ability; when it comes to pairing one with slacks -- which themselves come in all sorts of different blazer-flattering cuts and textiles -- color plays a huge role, but you'll also want to mind texture, pay attention to patterns and accessorize accordingly.
Of course, pairing a navy blazer with matching navy dress pants makes for a men's suit combo that will never go out of style. Wear a baby blue shirt, burgundy tie, and brown shoes and accessories for a sure bet. Just be sure the blazer and pants are an exact match to avoid clashing.
For something a little more summery, go with sky, baby or powder blue instead -- chinos and a white polo work for men, for example, while women can pull off cropped pants. Heels and a conservative clutch make this one a business friendly ensemble, while flats and a hobo bag make it just right for spring nights.
Tried, True and Warm
While warm hues aren't quite as easy to pair with a navy blazer, burgundy slacks will forever be this blazer's best friend.
When pairing navy with burgundy, take the opportunity to highlight how well these two shades complement brown accessories, whether they're a rich chocolate or a light camel color. Experiment with brogues, loafers, ankle boots, belts, bags and wallets, especially in leather and suede. While you're at it, top off the outfit with some brown tortoise-shell frames.
Whether you're a guy or gal, very few combos are as dependable as a navy blazer paired with slim-fitting tan chinos or khakis. Try it sockless with loafers or ballet flats, and a checked button-up or blouse in a cool color. If tan isn't your game, take your pick of just about any light brown shade -- beige, ecru, saddle and their variations all do the trick.
For men in particular, gray flannel or wool trousers trousers are a safe bet, especially during fall and winter. Take your pick of shades from light silver to medium charcoal, and feel free to layer on a flannel scarf and wool hat when it gets particularly chilly, or dress the style down in autumn with a pair of burgundy suede loafers. Ladies can adopt this look with wide-legged gray flannel slacks, a plaid blouse and an infinity scarf.
One gender-neutral way to introduce a little pop into your summer wardrobe is sporting a navy blazer with a white tee and cool- or neutral-colored trousers in a subtle check or plaid pattern. This look manages to be time-tested and rakish at the same time. Olive-colored flat-front bottoms also help you dip your toes into boldness. Paired with the blazer, they work very much like gray trousers.
Man or woman, if you want to take a risk at the country club, try wearing your navy blazer with pink, salmon or solid red or green flat-front slacks with a tapered leg as part of your warm-weather ensemble. Sport them with a white polo, white low-cut canvas sneakers and circle-framed shades for a sporty, bold vibe.
For either gender, the navy blazer is an excellent choice for hinting at a nautical style. To nail this look, grab a pair of white chinos or three-quarter-length bottoms, and wear thick stripes under your jacket. Accessories like boat shoes, aviator sunglasses, braided belts and espadrilles really suit this breezy look, but keep the nautical cues to about two pieces per outfit to avoid going overboard.