Slaked Lime is one of Little Greene's prettiest soft off-whites — that warm, chalky almost-white that lifts a room without going stark. But you don't have to pay Little Greene money to get it on your walls.
The closest matches in our database are Dulux Chiffon White 4 and Crown Best China, both sitting at ΔE 0.4 from the original. Anything under ΔE 1 is imperceptible to the human eye, so on the wall you simply will not see a difference. Both also share an LRV of 85.9, so they bounce light exactly the way Slaked Lime does — a genuinely cracking result for a fraction of the cost.
Of the two, I'd lean towards Dulux Chiffon White 4 if you want it in Trade Diamond Matt for durability, or Crown for their Clean Extreme range — both are workhorse emulsions that go on beautifully and scrub clean.
If you'd rather stay on the premium-but-greener side, COAT Me Time comes in at ΔE 1.6 with an LRV of 83.7. That's still a very close match — just a touch deeper — and COAT's water-based, low-VOC formula and recyclable packaging make it a sensible middle ground between budget Dulux and full-fat Little Greene.
The one thing worth flagging: a colour match measures the dried film, not the finish or the feel. Little Greene's Intelligent Matt has a particular depth and a slightly velvety drag that the cheaper trade emulsions don't quite replicate. For most walls in most rooms, nobody will ever clock it. But if it's a feature wall in a room where the light really matters, buy a tester of Chiffon White 4 and brush it out next to a Slaked Lime sample before committing.
Get two coats of decent emulsion over a properly primed surface and you'll have Slaked Lime for a lot less — sorted.