Blue Jumpers
Men's blue jumpers
Men's blue jumpers cover the widest tonal range in the knitwear collection, from a pale sky wool to a deep, near-black indigo that reads far smarter than its casual origins suggest.
The shades and how they're achieved
A men's blue jumper at Hackett London spans powder blue, cornflower and a deep petrol tone alongside navy, each achieved through a skein-dyed process, where the wool is dyed in loose hanks before spinning rather than after knitting. This gives a more even depth of colour through the fibre than a garment dyed after construction. Merino at a mid-weight gauge carries lighter blues particularly well, since the fine fibre takes dye more evenly than coarser wool.
A marled blue yarn, blending a blue fibre with a grey or undyed thread, softens some of the mid-weight styles and gives a texture that hides pilling better than a flat, single-tone dye.
Choosing a shade of blue for the season
Petrol and deep blue read as more versatile across autumn and winter, pairing with charcoal, camel and navy tailoring, while paler blues suit the shoulder seasons better. A blue jumper in a mid-tone works across the widest stretch of the year.
A petrol-blue crew neck under a charcoal wool overcoat with grey trousers, for a commute through the coldest months.
The same jumper over an open-collar shirt with stone chinos for a milder day that doesn't call for a coat at all.
Does blue wool fade with washing?
Skein-dyed wool holds its colour through the fibre rather than just the surface, meaning a men's blue jumper fades more slowly and evenly than a garment dyed only after knitting.
What's the difference between navy and blue jumpers?
Navy sits at the darkest end of the blue family, dyed deep enough to function almost as a neutral, while blue covers everything from pale sky tones to a mid-depth petrol. Navy pairs more like charcoal or black; lighter blues read as a more seasonal, casual choice. Both are typically finished in the same wool quality.
Which shade of blue jumper suits most people?
A mid-tone or petrol blue tends to flatter the widest range of skin tones, avoiding the starkness of very pale blue against fair complexions. It also pairs more easily with existing tailoring than a very bright or pale shade. Testing the tone in daylight remains the best way to judge it before buying.
Can a blue jumper be worn with navy trousers?
Tonal dressing within the same colour family works well provided the shades sit at a clear enough distance apart — a petrol jumper over navy trousers reads deliberate, while two near-identical blues can look like a mismatch. Adding a neutral third element, like a stone jacket, helps bridge the tones. Contrast in texture between wool and trouser fabric also helps the pairing read as intentional.