Blue casual dresses

If black feels like a lot, blue is your answer. A casual blue dress is genuinely one of the easiest things to wear, it suits everyone, it's calm and fresh rather than heavy, and it never tries too hard. The clever thing about blue is the range: a light or baby blue feels breezy and relaxed, almost like your favourite denim, while navy is quietly the smartest neutral going, basically black's cooler, softer cousin. Blue comes in every length too, so there's a casual blue dress for every mood. Sizes 4 to 20, free UK delivery over £135.

Easy blues, smart blues

Here's how we'd split it. The light stuff, baby, sky, powder and pastel blue, is all easy summer energy, made for a coastal day, a picnic in the park or a slow Sunday. Style it like denim: a breezy linen blue dress, a denim jacket if there's a chill, and flat sandals. Navy, royal and dark blue are the grown-up, smart-casual end, brilliant for a work lunch, a nice dinner or the office (our workwear edit leans right into it). A navy knit dress under a tailored coat is peak smart-casual. Pick your shade, and the whole vibe follows.

Any length you like

Blue plays nicely at every length. A blue maxi is relaxed and elegant for warm days, a blue midi is the do-anything sweet spot, and a blue mini is easy and fun when it's hot. And like black, a casual blue dress smartens up in seconds: swap flats for a heel, add a little gold, and a slip or satin blue dress is ready for dinner or drinks. Light blue keeps things soft and pretty, navy does understated and expensive, and both look far more considered than the effort involved. 

More blue to reach for

Our blue dresses edit gathers every shade in one place, and since navy is basically a neutral, it goes with everything you own. When casual turns into a night out, going-out outfits have you, cocktail dresses cover the dressier bookings, and party dresses are there for the fun stuff.