ΔE 14.7, fair: the same colour family, but not a straight swap. Gauss Blaster Green is a little lighter, more muted than Aqua Alchemy.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Gauss Blaster Green is a little lighter, more muted than Aqua Alchemy.
The same difference applies the other way round: Aqua Alchemy is a little darker, more saturated.
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 Aqua Alchemy on the colour wheel See Gauss Blaster Green on the colour wheel
All matches: Aqua Alchemy equivalents · Gauss Blaster Green equivalents