Mid Azure Green is a proper jewel of a colour, and the worst thing you can do is hang it next to bright white trim — it just collapses and looks cheap. The trick is to drench everything: walls, woodwork, ceiling, the lot. That's when it earns its keep and reads as a true jewel-box rather than a feature wall that's lost its nerve.
Once you've committed, warm it. This green leans cool and a little theatrical, so it craves antique brass, old leather, gilt frames and lamplight to stop it going chilly. One richly veined warm marble — a mantel or a tabletop — catching the light does more for it than any amount of cushions.
For a softer companion, Farrow & Ball Au Lait (LRV 80) is a lovely clotted-cream that takes the edge off without fighting the green — use it on an adjoining hallway or as a ceiling if you don't fancy full drench overhead. Paper III from Paint & Paper Library (LRV 75.3) does a similar job, a touch crisper, and works beautifully as a contrast on ceramics, lampshades or trim if you want a little relief.
For accents that bring the warmth, Mylands Cigar BH.20 (LRV 11.8) is the one — a deep tobacco-brown that echoes the leather-and-lamplight mood perfectly. Pull it onto a door, a bookcase back or joinery and the whole scheme deepens.
Want a jolt of drama? Dulux Fuchsia Falls 2 (LRV 29.8) is the bold complementary play — pink against green is a classic for a reason. Keep it to a chair, a print or a length of fabric rather than the walls, and it sings.
Practically: buy sample pots and paint a big board you can move around the room at different times of day. Mid Azure Green shifts a lot under artificial light, and you want to be sure your brass and leather are doing their job before you commit the ceiling.