ΔE 13.6, fair: the same colour family, but not a straight swap. Foul Green is a little darker, much more saturated than Gauss Blaster Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Foul Green is a little darker, much more saturated than Gauss Blaster Green.
The same difference applies the other way round: Gauss Blaster Green is a little lighter, much 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 Gauss Blaster Green on the colour wheel See Foul Green on the colour wheel
All matches: Gauss Blaster Green equivalents · Foul Green equivalents