ΔE 5.4, very close: most people won’t see a difference side by side. Sap Green is more saturated than Nuln Oil. They are different kinds of paint: Citadel Nuln Oil is a wash/shade and Scale75 Sap Green is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Yes, for most jobs. Very close match (ΔE 5). Sap Green is more saturated than Nuln Oil. They are different kinds of paint.
The same difference applies the other way round: Nuln Oil is more muted.
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 Nuln Oil on the colour wheel See Sap Green on the colour wheel
All matches: Nuln Oil equivalents · Sap Green equivalents