ΔE 7.6, close: similar, with a visible difference side by side. IJN Gray (Sasebo Arsenal) is a little lighter than Crow Hue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). IJN Gray (Sasebo Arsenal) is a little lighter than Crow Hue.
The same difference applies the other way round: Crow Hue 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 Crow Hue on the colour wheel See IJN Gray (Sasebo Arsenal) on the colour wheel
All matches: Crow Hue equivalents · IJN Gray (Sasebo Arsenal) equivalents