White Clay is one of Earthborn's quiet heroes — a warm, chalky off-white that leans very slightly green-yellow. That cast is exactly what makes it cosy in north light rather than clinical, but it also means you need to choose its company carefully.
The golden rule: treat it as a soft envelope and surround it with natural texture. Limed oak, terracotta tiles, linen, jute, unlacquered brass — White Clay sings against all of them. For woodwork and trim, stay in the warm off-white family. Don't be tempted by a crisp brilliant white skirting, because the contrast exposes that green-yellow undertone and makes the wall read grubby. A warm trim keeps everything reading as deliberate and calm.
For companion colours, three directions work beautifully. Mylands Artichoke BH.13 (LRV 27.6) is the natural partner — a soft, muddy green that picks up White Clay's own undertone and grounds the scheme without going heavy. Use it on a feature wall, cabinetry or a panelled section. For a cooler, more restful pairing, Paint & Paper Library Slate IV (LRV 67.5) is a gentle blue-grey that sits at a similar light level, so the two flow together rather than fighting — lovely for a calm bedroom or a softly washed hallway.
If you want drama and a proper anchor, Dulux Sapphire Springs 1 (LRV 6.4) brings a deep, inky blue that frames White Clay handsomely — think a dark feature wall, a built-in bookcase or the inside of an alcove. The big tonal gap creates contrast, but because it's a warm-leaning deep tone it won't turn the white cold.
Practically: sample all of these large and live with them across a full day. White Clay shifts noticeably between morning and evening light, and you want to see how Artichoke or Slate IV behave alongside it at dusk. Paint your trim colour up against the wall colour on the same board too — that's where the warm-white-vs-cool-white decision gets made.