Marine Mist vs Gauss Blaster Green

How close are they?

ΔE 16.1, loose: different enough that you should pick on purpose. Gauss Blaster Green is a little darker, more saturated, warmer than Marine Mist.

Can I use Gauss Blaster Green instead of Marine Mist?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Gauss Blaster Green is a little darker, more saturated, warmer than Marine Mist.

Can I use Marine Mist instead of Gauss Blaster Green?

The same difference applies the other way round: Marine Mist 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.