ΔE 9.7, close: similar, with a visible difference side by side. Cam. Olive Green is a little darker, more saturated than Stormcover Grey.
Usually, if you are not matching paint already on the model. Close match (ΔE 10). Cam. Olive Green is a little darker, more saturated than Stormcover Grey.
The same difference applies the other way round: Stormcover Grey is a little lighter, 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 Stormcover Grey on the colour wheel See Cam. Olive Green on the colour wheel
All matches: Stormcover Grey equivalents · Cam. Olive Green equivalents