Teal is a confident colour, so it wants partners that either warm it up or step out of its way. The two routes that always work are warm contrast and soft neutral balance.
For contrast, go opposite teal on the colour wheel — into copper, terracotta and burnt orange. Dulux Copper Glow (LRV 30.1) is exactly the kind of warm metallic-adjacent tone that makes teal sing; use it on a chimney breast detail, soft furnishings or a feature piece rather than a whole wall. Same logic with Mylands Bloomsbury No.267 (LRV 30.5) — a deeper, earthier warm that grounds teal without fighting it. These mid-LRV warms give you contrast and richness in one move, which is why teal-and-copper schemes feel so deliberate.
Then you need something to breathe. Teal at full strength on the walls can close a room in, so pair it with a generous warm white or sandy neutral on ceilings, trim and adjoining walls. Paint & Paper Library Sand I (LRV 95.4) is about as bright and clean as it gets — it bounces light back and stops the scheme tipping into a cave. That high LRV does a lot of quiet work.
The "but what about" question I always get: *can I do teal with grey?* You can, but cool greys can leave the whole thing a bit flat and dental-surgery. If you want a quieter scheme, go for a warm greige rather than a blue-grey — it keeps the warmth in play. And if you want teal with another colour rather than a neutral, soft pinks and dusty roses are a cracking, slightly unexpected pairing.
Practical advice: keep your teal to one or two surfaces, lead with a warm neutral elsewhere, and bring the copper or terracotta in through accents — cushions, lampshade, a rug. Get those proportions right and the room reads designed, not busy. Sample everything on the actual wall and look at it morning and evening before you commit.