ΔE 14.9, fair: the same colour family, but not a straight swap. Greenskin is noticeably darker, cooler than Intermediate Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Greenskin is noticeably darker, cooler than Intermediate Green.
The same difference applies the other way round: Intermediate Green is noticeably lighter, 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 Intermediate Green on the colour wheel See Greenskin on the colour wheel
All matches: Intermediate Green equivalents · Greenskin equivalents