ΔE 12.7, fair: the same colour family, but not a straight swap. Gnarls Green is a little darker, cooler than Gremlin Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Gnarls Green is a little darker, cooler than Gremlin Green.
The same difference applies the other way round: Gremlin Green is a little 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 Gremlin Green on the colour wheel See Gnarls Green on the colour wheel
All matches: Gremlin Green equivalents · Gnarls Green equivalents