If you want Edward Bulmer Lute in a Dulux tin, the nearest hit is Dulux Bracken Salts 3 (LRV 51.2), landing at ΔE 2.5 from the original. That's the threshold of "very close" — most people won't clock the difference across a room, though a side-by-side comparison on the same wall might just reveal it. Second in line is Dulux Golden Cookie (LRV 52.3) at ΔE 2.9, which drifts a touch further but is still a respectable match.
Here's the honest bit, mate: Edward Bulmer's paints are built on natural earth and mineral pigments, which is exactly what gives Lute its soft, slightly chalky depth. A standard Dulux tint mixed to a colourant recipe will never quite reproduce that pigment behaviour — it can match the *colour* coordinates closely, but the way it shifts under changing light won't be a perfect mirror. So at ΔE 2.5, Bracken Salts 3 gets you the right colour; it doesn't get you the right paint.
The usual "but what about" question: which finish? If you're chasing Lute's character, go for a flat or matt emulsion in the Dulux line rather than a soft sheen — gloss flattens the warmth and pushes it slightly more synthetic-looking.
My practical advice: order a Dulux sample pot of Bracken Salts 3, paint a large A2 patch (two coats), and live with it for a few days in your actual light before committing. Both Lute and its matches sit just above LRV 50, so they read as a warm, gentle mid-tone — but warm colours are the ones most prone to looking different north-facing versus south-facing. If the budget stretches and the room matters, the real Edward Bulmer Lute is worth the premium for the pigment quality alone. If it's a rental or a quick refresh, Bracken Salts 3 will do you proudly.