Every season, fashion settles on a colour it wants everyone to feel confident in, and for a few months this year that colour was cobalt: a blue with none of navy's caution and none of turquoise's whimsy, saturated enough to read as a decision rather than a detail. It turned up first in coat linings and accessories, the safe places a trend tests itself before committing, and then it stopped playing safe, appearing in full looks from London to Milan. Interiors has always borrowed its confidence from fashion a season or two later, and this particular blue has made the crossing faster than most. It is now showing up on walls in exactly the saturated, unapologetic form it wore on the runway, and it is worth understanding why.
The clearest example of that crossover comes from an unlikely source: a painter better known for portraits than pattern books.
A painter's eye for colour, translated onto a wall
Coco Dávez, the professional name of the Madrid-based artist Valeria Palmeiro, built her following painting film stars and pop icons stripped of their faces, using no more than four or five flat, unshaded colours per canvas and letting an instantly recognisable silhouette do the rest. That same instinct for bold, decisive colour is exactly what Coordonné borrowed for Colortherapills, its ten-design collaboration with her, and Toldo Cobalt is the design that makes the strongest case for this trend: broad, confident stripes lifted from the awnings that shade a café terrace, in a blue saturated enough to carry an entire wall without any help from a second pattern. Seen next to Galope, her gallop of horses rendered in warm gold rather than cobalt, the two prove the same point twice over: it is the artist's eye for colour doing the work, not the motif underneath it.
Toldo, Cobalt, Colortherapills by Coordonné
Galope, Golden Coco, Colortherapills by Coordonné
Two design traditions, half a world apart, the same blue
Coordonné's eye for craft goes further than one collaboration. Its Shibori collection reinterprets a genuinely old Japanese technique, the practice of folding, knotting and hand-dyeing cloth that artisans perfected during the Nara and Heian periods, over a thousand years ago, and Kumo Indigo translates that same soft, hand-worked resist-dye effect onto a wall in exactly the deep indigo blue the technique is known for. Half a world away, Tres Tintas' Bananeira Cobalto takes the same family of blue somewhere entirely different: it comes from Bossa Nova, the Barcelona studio's tribute to the Brazilian landscape architect Roberto Burle Marx, whose sweeping, tropical planting schemes reshaped how Brazil thinks about a garden. A banana leaf rendered in cobalt is about as far from a Japanese dye tradition as pattern gets, and that is rather the point: a good blue apparently travels anywhere.
Kumo, Indigo, Shibori by Coordonné
Bananeira, Cobalto, Bossa Nova by Tres Tintas
A Spanish studio's own take on the colour
Tres Tintas' own history runs in a similar vein. The Barcelona studio was founded in 2004 out of a family wallpaper business that had already been trading for 65 years, and it has spent the years since collaborating with Spanish artists and designers on collections that feel unmistakably of their city. Solera borrows its name from the centuries-old system Andalusian bodegas use to age sherry, barrels blended and topped up in stages across decades so that no single vintage ever tells the whole story, and the collection has a similarly layered, well-travelled feel. Souvenirs Blue is a toile of holiday mementoes rendered in the deepest cobalt, and Vermut Cobalt takes its name from the aperitif that opens a long Spanish lunch, both designs built from the same instinct for a blue that feels lived-in rather than freshly unwrapped.
Souvenirs, Blue, Solera by Tres Tintas
Vermut, Cobalt, Solera by Tres Tintas
The retro end of the spectrum
Cobalt has a retro side too, and two archive-minded collections make the case from opposite ends of Europe. Abstract Bricks Blue comes from Eijffinger's Groovy collection, a Dutch house leaning candidly into a seventies mood, its geometric brick motif rendered in a blue confident enough to hold a whole wall. Loka, from Boråstapeter's Anno collection, a range built entirely from historic Swedish wallpaper patterns spanning the 1500s to the 1920s, is a dark trellis with the same seventies edge in Dark Blue. Seen together, they are a reminder that this particular decade keeps resurfacing, and that cobalt suits its geometry unusually well.
Abstract Bricks, Blue, Groovy by Eijffinger
Loka, Dark Blue, Anno by Boråstapeter
Cobalt doesn't always take itself seriously
Not every use of this blue needs to be quite so considered. Playblocks Indigo, from Coordonné's BB Kids collection, takes the same confident cobalt into a child's room, its stacked building-block motif turning a strong colour into something playful rather than serious. Leopardo, in Black and Electric, is the adult equivalent: a leopard print from Matthew Williamson, a designer whose 1997 debut collection, Electric Angels, was built on exactly this kind of fearless colour, rendered here in a blue with genuine bite. Between a child's bedroom and a bold single wall, this is proof that cobalt doesn't have to be worn quietly.
Playblocks, Indigo, BB Kids by Coordonné
Leopardo, Black and Electric, by Matthew Williamson
For anyone who wants to carry the same colour into cushions, curtains or upholstery, it is worth browsing the site's blue fabric collection alongside any of the papers above. Pairing a bold wallpaper with a plain fabric in the same family of blue is the simplest way to make a strong colour feel considered rather than accidental. As with any strong colour, the truest test is a sample seen on your own wall in your own light rather than on a screen, and every design here has one available.
Trends like this rarely last because of the trend itself. They last because a colour this confident turns out to suit rooms as well as it suits a runway, and cobalt has already proved it can hold its own across a Japanese dye tradition, a Barcelona family business and a child's playroom alike.
