ΔE 8.4, close: similar, with a visible difference side by side. German Grey is a little lighter, more muted than Hookers Green Hue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). German Grey is a little lighter, more muted than Hookers Green Hue.
The same difference applies the other way round: Hookers Green Hue is a little darker, more saturated.
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 Hookers Green Hue on the colour wheel See German Grey on the colour wheel
All matches: Hookers Green Hue equivalents · German Grey equivalents