ΔE 9.2, close: similar, with a visible difference side by side. UK Bronze Green is a little darker, more muted than Wyvern Green.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). UK Bronze Green is a little darker, more muted than Wyvern Green.
The same difference applies the other way round: Wyvern Green is a little lighter, 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 Wyvern Green on the colour wheel See UK Bronze Green on the colour wheel
All matches: Wyvern Green equivalents · UK Bronze Green equivalents