ΔE 8.5, close: similar, with a visible difference side by side. Space Grey is more muted, cooler than Green Shark Skin.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Space Grey is more muted, cooler than Green Shark Skin.
The same difference applies the other way round: Green Shark Skin is 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 Green Shark Skin on the colour wheel See Space Grey on the colour wheel
All matches: Green Shark Skin equivalents · Space Grey equivalents