ΔE 9.0, close: similar, with a visible difference side by side. Jade Green is a little lighter, cooler than Nurgling Green. They are different kinds of paint: Citadel Nurgling Green is an opaque base/layer paint and Green Stuff World Jade Green is an ink, glaze or transparent paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Jade Green is a little lighter, cooler than Nurgling Green. They are different kinds of paint.
The same difference applies the other way round: Nurgling Green is a little darker, warmer.
ΔE is the colour difference between our two swatch estimates: under about 6 is close, over about 15 is loose. Real paints also differ in finish, coverage and how they thin, so test before you commit.
See Nurgling Green on the colour wheel See Jade Green on the colour wheel
All matches: Nurgling Green equivalents · Jade Green equivalents