ΔE 12.6, fair: the same colour family, but not a straight swap. Amber Green is a little darker, more saturated, cooler than Grave Robber.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Amber Green is a little darker, more saturated, cooler than Grave Robber.
The same difference applies the other way round: Grave Robber is a little lighter, more muted, 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 Grave Robber on the colour wheel See Amber Green on the colour wheel
All matches: Grave Robber equivalents · Amber Green equivalents