ΔE 13.7, fair: the same colour family, but not a straight swap. Ghoul Green is a little darker, more saturated, warmer than Gauss Blaster Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Ghoul Green is a little darker, more saturated, warmer than Gauss Blaster Green.
The same difference applies the other way round: Gauss Blaster Green is a little lighter, more muted, cooler.
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 Ghoul Green on the colour wheel
All matches: Gauss Blaster Green equivalents · Ghoul Green equivalents