Inspired by your brief, I’ve curated a mix of armchairs that work with both the mid-century and contemporary sides of your style, while also responding to the strong colour story already in the room.
As I don’t have details of how the existing sofa looks, I’ve intentionally varied the silhouettes and visual weight. Some options sit lighter on visible legs, while others feel more grounded and cocooning, so you can choose what creates the best balance opposite the sofa.
I’ve also explored two colour directions: chairs that echo the petroleum, green and pink tones already in the space for a more tonal, collected feel, and warmer contrasting shades that create a stronger focal point. With a room this characterful, I think either approach can work beautifully. The key is making the armchairs feel connected to the scheme without looking overly matched.
Wayfair.co.uk
Fairmont Park Upholstered Textured Weave Swivel Armchair
I’d choose the ochre version here. It gives you a warm counterpoint to the wall colour and green-grey sofa, while picking up beautifully against the pink rug. At 75cm wide, the compact, elevated silhouette also makes sense as a pair in a smaller seating zone, and the swivel base gives it a slightly more contemporary edge.
The terracotta is such a good colour bridge between the pink rug and deeper blue-green walls. I love the low, rounded silhouette too, but this is one I’d measure carefully: at 101cm wide, two together will have considerably more visual weight than the other options. If the niche can take the scale, they’d make a beautiful statement.
Dunelm
Alpine Zig Zag Chenille Spindle Chair
This is probably the most playful option in the edit, and I think the room can handle it. The zig-zag chenille introduces pattern without relying on another block colour, while the timber spindle frame brings in that mid-century language from the brief. At only 66cm wide, it’s also particularly good if you want the pair to feel visually light.
John Lewis
Elephant Armchair
I wouldn’t usually suggest matching green with green, but here the change in texture makes it work. The bouclé creates contrast against the velvet sofa, while keeping the palette tonal and sophisticated. Its rounded, slightly cocooning form also softens the stronger architecture and colour around it.
This is the cleanest, most mid-century leaning option in the edit. The raised legs give it visual lift, which could work beautifully if your sofa is more grounded, while the curved arms keep the silhouette soft. At £399 per chair, it does sit above budget, but I felt it was worth including as a more elevated option if you’re open to stretching slightly for the right design.