ΔE 8.5, close: similar, with a visible difference side by side. Interior Grey Green is warmer than A-18f Light Grey-Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Interior Grey Green is warmer than A-18f Light Grey-Blue.
The same difference applies the other way round: A-18f Light Grey-Blue is 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.
See A-18f Light Grey-Blue on the colour wheel See Interior Grey Green on the colour wheel
All matches: A-18f Light Grey-Blue equivalents · Interior Grey Green equivalents