ΔE 9.1, close: similar, with a visible difference side by side. IJN Gray (Maizuru Arsenal) is a little lighter than Dawnstone.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). IJN Gray (Maizuru Arsenal) is a little lighter than Dawnstone.
The same difference applies the other way round: Dawnstone is a little darker.
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 Dawnstone on the colour wheel See IJN Gray (Maizuru Arsenal) on the colour wheel
All matches: Dawnstone equivalents · IJN Gray (Maizuru Arsenal) equivalents