The line between on-call and off-the-clock has never been blurrier. Not surprisingly, the same is true of what constitutes appropriate, good-looking office attire (whether your desk is at a museum or a hedge fund). Consider suit separates (like the slate-gray silk pants and pale-blue two-button-jacket combo by Ermenegildo Zegna shown on the right) the new godsend, as they make buying off the rack easier than ever (though you'll still need a tailor, which is why we've included some of the best in the country who just happen to make desk-side calls). Of course, on the following pages you'll see less-formal options, too—dark-wash denim, a bold, bright tie, and even a leather jacket should and can be incorporated into the daily—and evening—grind. How you dress for the job will always leave a lasting impression.
To ensure it's a good one, read on.

Right: Jacket ($3,895), shirt ($695), and pants ($1,400) by Ermenegildo Zegna Couture. Tie ($275) by Ermenegildo Zegna.

View Enlarged

#1. Dress Up Your Denim With a Pop Of Color
The key here is choosing a vivid shirt-and-tie combo in complementary shades and a blazer—like this unstructured one—in a can't-miss neutral.

Blazer ($1,495) by Burberry London. Shirt ($495) and tie ($295) by Burberry Prorsum. Jeans ($78) by Levi's.

#2. Wear the Suit Without a Tie
Get even more mileage out of a well-tailored suit. A fine-gauge crewneck knit sweater strikes the perfect note of refined yet relaxed.

Suit ($1,495) by Eidos. Sweater ($695) by Louis Vuitton. Pocket Square ($95) by Dunhill. Loafers ($380) by Fratelli Rossetti Estate Uomo.

#3. Yes, You Can Mix and Match Patterns
Keeping these pieces in the same color family means that a subtle pattern on the jacket (checks, in this case) effortlessly introduces some visual texture.

Blazer ($695) by Ami. Shirt ($295) by Boglioli. Pants ($698, sold as a full suit) by Brooks Brothers. Tie ($70) by Tallia. Shoes ($745) by Saint Laurent by Hedi Slimane.

• • •

#4. Remaster the Art of the Button-Down

If there's one failsafe white shirt to own, this would be it.
$330; Jil Sander

A spread collar paired
with a skinny knit tie makes it easy to do casual Friday right.
$110; Banana Republic

A soft linen blend in a light cream is both unexpected and elegant.
$320; Alexander Olch

• • •

#5. Upgrade Your Briefcase

Sleek and streamlined for the modern minimalist.
$1,200; Mulberry

A bag with structure cut from preposterously soft leather.
$2,450; Parabellum

Just big enough to double as a weekender.
$2,250; Lanvin

• • •

#6. Broaden Your Footwear Options
Yes, classic lace-ups are always office-appropriate. But so are other, less-conventional shoes, from leather slippers to suede boots.

From Top:
Row 1: Black Fleece by Brooks Brothers ($698).
Row 2; From Left: Bruno Magli ($585); Church's ($710).
Row 3; From Left: John Lobb ($1,425); Gucci ($540); Grenson ($390).
Row 4; From Left: Cole Haan ($248); Tod's ($575); Hermès ($700); J. Crew ($298).