ΔE 7.1, close: similar, with a visible difference side by side. Interior Grey Green is more saturated, cooler than Light Aircraft Gray BS381C 627.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Interior Grey Green is more saturated, cooler than Light Aircraft Gray BS381C 627.
The same difference applies the other way round: Light Aircraft Gray BS381C 627 is more muted, 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 Light Aircraft Gray BS381C 627 on the colour wheel See Interior Grey Green on the colour wheel
All matches: Light Aircraft Gray BS381C 627 equivalents · Interior Grey Green equivalents