Go with Dulux Caramel Sand 3. At ΔE 2.2 from Edward Bulmer Clove, it's the nearest Dulux can offer and it's well inside the "very close" band — most people wouldn't clock the difference once it's on the wall. It has an LRV of 46.1, so it reads as a properly mid-toned warm earth, the same broad territory Clove lives in.
If you want a touch more lift, Dulux Caramel Blush 3 is the runner-up at ΔE 2.6. With an LRV of 53.9 it's noticeably lighter and a shade pinker, so it'll feel airier in a north-facing room but won't carry the same depth. For a faithful swap, Caramel Sand is the one I'd reach for.
Now the honest bit. Clove is an Edward Bulmer colour, and that brand is built on natural earth and mineral pigments — the way it shifts through the day, especially in low or warm light, is part of what you're paying for. A Dulux match nails the daytime hue but won't replicate that pigment-driven movement exactly. A ΔE of 2.2 is a genuinely good match, but "good match" isn't "identical at every hour."
So if you specifically love how Clove behaves at dusk, buy the real thing for the rooms that matter and use the Dulux match for cupboards, a utility, or somewhere the lighting is less precious. If you just want that warm clove tone at a friendlier price point and easier availability, Caramel Sand 3 will sort you nicely.
Whatever you land on, get a sample pot and paint a decent A2 patch — two coats, on the wall, not on a card. Live with it for a couple of days across morning and evening light before you commit. Earth tones in particular swing harder than you'd expect between brands, and your eye is the only test that counts.