Stable Green is one of those deep, grounded greens that genuinely comes into its own when you commit to it. My honest advice: drench the whole room — walls, woodwork, ceiling, the lot. Half-hearted Stable Green on one feature wall looks dirty and unsure of itself. Go all in and it becomes properly enveloping and handsome.
The golden rule with this colour is keep your whites creamy, never brilliant. A stark brilliant white next to Stable Green looks like a mistake — it kills the warmth and makes the green read cold. Instead reach for Paint & Paper Library's own Paper III (LRV 75.3) for ceilings and trim, or Farrow & Ball's Au Lait (LRV 80) if you want something with a touch more milky depth. Both have enough warmth to sit comfortably alongside the green without fighting it.
For accents, this is where Stable Green earns its keep. Deep oxblood reds and warm ochres are the classic move — they lift the green and stop the scheme feeling flat. Mylands Cigar BH.20 (LRV 11.8) is a gorgeous tobacco-brown that works beautifully for a paired-back, gentlemanly look, while Dulux Fuchsia Falls 2 (LRV 29.8) brings a punchier, more unexpected pink-toned accent if you fancy something with a bit of life in cushions or a single piece of joinery.
Materials matter as much as paint here. Antique brass hardware, old leather (think a worn club chair or tan brogue tones), and smoked oak flooring or furniture all bring out the best in Stable Green. Polished chrome and pale grey-toned woods will leave it looking cold — avoid them.
Practically: test Stable Green on at least two walls and live with it across a full day. North-facing rooms will deepen it considerably, which can be glorious in a snug or dining room but oppressive in a small bathroom. South light keeps it more open and sage-leaning. Get the lighting read first, then build your creamy whites and warm accents around it.