If hearing that there's already a trend on deck to knock royal purple off of its throne gives you color-trend whiplash, I get it. But this one is pretty undeniable. The hue I speak of is cobalt blue. Its rise actually began months ago, but after seeing it on countless S/S 27 runways throughout fashion month (Loewe, Kallmeyer, Proenza Schouler among them), it's clear that cobalt, used somewhat interchangeably with Klein blue, royal blue, and ultramarine, will be the It color of 2027.

Truth be told, cobalt blue isn't that far of a cry from royal purple, and is a clear continuation of the jewel-tone theme that's defined fashion as of late. The runway and fashion-girl examples below show that it's as cool to wear it as just a pop of color as it is when worn head-to-toe, so have fun with it, and by all means, start wearing it now.

Keep scrolling to see cobalt on the runways and IRL, and shop chic options to wear now and in 2027.

The Runway and IRL Evidence

On the S/S 27 Runways

(Image credit: Launchmetrics Spotlight)

Pictured: Givenchy S/S 27

(Image credit: Launchmetrics Spotlight)

Pictured: Calvin Klein Collection S/S 27

(Image credit: Launchmetrics Spotlight)

Pictured: Ralph Lauren Collection S/S 27

(Image credit: Launchmetrics Spotlight)

Pictured: Loewe S/S 27

(Image credit: Launchmetrics Spotlight)

Pictured: TWP S/S 27

On the Fashion Set

(Image credit: @cocoschiffer)

(Image credit: @monikh)

(Image credit: @styledsara)

(Image credit: @annabelrosendahl)

(Image credit: @nlmarilyn)Shop Chic Cobalt Blue Pieces

MANGO Wool & Cashmere Blend Triangular Scarf in Blue

Leset The Margo Long Sleeve in Leset Blue

ZARA 100% Leather ZW Collection Jacket in Blue

Polo Ralph Lauren Jersey Short Sleeve Crew Neck T-Shirt in Royal Blue

J.Crew Oversized Cashmere Crewneck Sweater in Salt Stone Blue

Reformation Blaine Flats in Cobalt Suede

Bottega Veneta Giorno Intrecciato Suede Shoulder Bag in Royal Blue

ZARA Oversized Dropped Shoulder Coat in Bluish

STAUD Spencer Cashmere Sweater in Cobalt

alex mill Cashmere Socks in Cruise Blue

AGOLDE Sona Cotton Button-Up Shirt in Cobalt Bright Electric Blue

COS Umbra Tapered Jeans

DRIES VAN NOTEN Calf-Hair Sneakers in Cobalt Blue

Aritzia Homestretch Rib Airwave Longsleeve in Ablaze Blue

Miu Miu Wool and Cashmere Shawl in Royal Blue

THE FRANKIE SHOP Gala Merino Wool and Cashmere-Blend Turtleneck Sweater in Blue

SilRiver 100% Mulberry Silk Satin Skinny Scarf in Royal Blue

Polo Ralph Lauren Cotton Short Sleeve Cardigan Sweater in Gala Blue