ΔE 7.8, close: similar, with a visible difference side by side. Black Green is more muted than Craventhrone Cloak.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Black Green is more muted than Craventhrone Cloak.
The same difference applies the other way round: Craventhrone Cloak is 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 Craventhrone Cloak on the colour wheel See Black Green on the colour wheel
All matches: Craventhrone Cloak equivalents · Black Green equivalents