ΔE 8.0, close: similar, with a visible difference side by side. Light Grey is a little darker than Light Grey Shadow.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Light Grey is a little darker than Light Grey Shadow.
The same difference applies the other way round: Light Grey Shadow is a little lighter.
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 Grey Shadow on the colour wheel See Light Grey on the colour wheel
All matches: Light Grey Shadow equivalents · Light Grey equivalents