Yes, and you've got a genuinely good option here. Dulux Jungle Fever 1 comes in at ΔE 1.8 from Little Greene Sage Green, with an LRV of 21.1. Anything under 2.5 is a very close match, so on the wall you'd struggle to tell them apart — that's a proper like-for-like, not a vague "in the same family" job.
The other two contenders aren't really matches, so I'll be straight with you. Crown Family Tree (LRV 18.1) lands at ΔE 8.4, and COAT King George (LRV 15.3) at ΔE 6.8. Both are lovely greens in their own right — King George especially is a cracking deep sage — but neither is going to read as Sage Green next to the original. If you want *that* colour specifically, Jungle Fever 1 is the answer. If you're just after a good green and happy to shift the tone, King George is worth a look on its own merits.
Now the honest bit: Sage Green is a mid-tone green with a touch of grey, and it shifts noticeably between north and south light. The match figures are measured under standard conditions, so always test in your own room before committing. Dulux Heritage and standard Dulux can both mix Jungle Fever 1 — go for Dulux Heritage's eggshell or matt if you want a finish that feels a notch closer to Little Greene's quality.
One thing worth saying — Little Greene's pigment load and depth of finish are part of what you pay for, particularly in their Intelligent and Absolute Matt ranges. Dulux will get you the colour for less, but if this is a feature wall or a room you'll really live with, the original earns its keep on durability and the way it sits in changing light.
Grab a tester of Jungle Fever 1, paint a decent A4 patch, and check it morning and evening before you buy the lot.