ΔE 7.5, close: similar, with a visible difference side by side. Bronze Green is a little darker, more saturated than Dark Green BS641.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Bronze Green is a little darker, more saturated than Dark Green BS641.
The same difference applies the other way round: Dark Green BS641 is a little lighter, more muted.
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 Dark Green BS641 on the colour wheel See Bronze Green on the colour wheel
All matches: Dark Green BS641 equivalents · Bronze Green equivalents