ΔE 10.4, fair: the same colour family, but not a straight swap. Camou. Grey Green is a little lighter, more muted, cooler than Graveyard Earth.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Camou. Grey Green is a little lighter, more muted, cooler than Graveyard Earth.
The same difference applies the other way round: Graveyard Earth is a little darker, more saturated, 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 Graveyard Earth on the colour wheel See Camou. Grey Green on the colour wheel
All matches: Graveyard Earth equivalents · Camou. Grey Green equivalents