So, you want to try one of the many vibrant seasonal colour trends that are dominating this season, but are unsure how to begin. If that’s the case, then consider the major summer trouser colour trends as your entry point for injecting a saturated tone into your wardrobe, without feeling like you’re a walking colour wheel.
Despite lightweight trousers like relaxed linen, soft cotton and sumptuous silk being synonymous with hot weather dressing, it’s a category that often feels underutilised given we typically see these shapes rendered in milky white shades like cream and vanilla. Still, during a time of the year when the nights are long and moods are high, these key summer trouser colours are an opportunity to invite a spirited energy into your ensembles.
Of course, there is nothing wrong with tried-and-tested silhouettes of pairing a white tank top with baby blue denim or chocolate brown silk pants. Still, when the majority of what we’re wearing includes foundational pieces like T-shirts and peasant tops, why not make things a little more high-octane by pairing them with one of the few colour trends that keep cropping up?
Thus far, we’ve seen the full gamut of trouser colour this summer, adopting the balmy tones that have cropped up across the runways and real life. Now, trousers offer a more versatile and easy way to wear them. It often feels that there’s a barrier to entry when it comes to wearing these more experimental colours. But when rendered in an easy one-and-done format, all the guesswork is taken out of how to style them.
Whether it be a pair of classic trousers, casual jeans or unconventional balloon pants, keep scrolling through for the key summer trouser colour trends of 2026.
The 5 Key Summer Trouser Colour Trends of 2026
1. Cobalt Blue
Style Notes: Cobalt blue is a colour that’s deeply entrenched in some of fashion’s most memorable moments, be it Phoebe Philo’s tenure as creative director of Celine or its appearance in Matthieu Blazy’s landmark Métiers d'art 2026 collection for Chanel. After an appearance at the BAFTAs on Best Actress winner Jessie Buckley and a feature in Lucy Williams’ collaboration with London-based everyday tailoring brand With Nothing Underneath, cobalt trousers have clearly become the colour du jour.
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Made of a fine poplin, this pair is one of the most covetable cobalt trousers available.
Bridging chic and comfortable elements from everyday dressing rituals.
Add a feathered rosette and beaded sandal to elevate this essential even further.
Leset is the go-to for opulent staples, and these pants are the epitome of this branding
2. Khaki
Style Notes: The definition of what can be considered a neutral tone has expanded in recent years, with the scope now including leopard prints and wine tones like burgundy and chianti. Khaki is another colour trend that has seen an uptick since the rules for these minimal and timeless shades have been rewritten. Spanning from lighter sands to deeper olives, this serves as the perfect transeasonal colour trend to see us through to the first stages of autumn’s brisk wind well into winter’s intense chill. When worn during the scorching summer months that still await us, it adds a rich and sumptuous touch to any look.
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These cord trousers look far more premium than your average pair.
Jeans are one of Reformation's biggest categories, but one that doesn't get enough love.
The pleat is such a tailored design element.
This is a colour combination that can see you through early August to late October.
3. Red
Style Notes: If stopping traffic is what you’re hoping to achieve with your summer trousers, then look no further than the red colour trend. Adding a pop of this shade adds visual intrigue to your ensemble, thanks to the high-contrast nature of this trend. Because of the stark difference between this bright, passionate tone and the softer shades it's paired with, it will instantly make you appear more considered and thoughtful, when simply all you’ve done is worn a different colour pair of trousers.
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Agolde jeans are like kryptonite for fashion insiders.
The combination of this blush red and ruby slippers is such a sleek pairing.
This will do the heavy lifting
Pair with a leather jacket or a striped shirt.
4. Chartreuse
Style Notes: Piquant tones are a signature of summer wardrobes, whether it be the early noughties-inspired coral shade seen at brands like Mode Mischief to the indie sleaze-esque royal purple colour spotted at labels including Nii Hai. All these summer colour trends feel tame in comparison to chartreuse. Deeply polarising but becoming increasingly popular, there’s no doubting this trouser colour turns heads, especially when rendered in the viral silk taffeta style from Reformation or the crisp apple-coloured georgette version from New Zealand-based label Harris Tapper that was worn by Jennifer Lawrence a few weeks ago.
Sophisticated and sleek.
This will fill so many gaps in your wardrobe.
A two-piece set that you can wear again and again.
Jennifer Lawrence-approved.
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5. Black
Style Notes: Consider this a true palette cleanser, but black trousers are trending for summer. You might think that this dark hue is far too hot to wear during the summer months, but whether you blame it on the work Berlin and New York-based tastemaker Brenda Weischer has done in proving the versatility of a monochromatic wardrobe, or the rise in the boho goth aesthetic, wearing black trousers this summer has become a default for many. This season, there are quite a few polished styles to choose from, be it the cropped shorts from Australian label Maem Disko or the loose-cut bloomers from Cou Cou Intimates.
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Add a slimline belt and minimal sandals.
A great example of the underwear-as-outwear trend.
Balloon trousers are all the rage.
An outfit you'll feel good in.