ΔE 6.8, close: similar, with a visible difference side by side. Belladonna Green is a little lighter, more muted than Hexwraith Flame.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Belladonna Green is a little lighter, more muted than Hexwraith Flame.
The same difference applies the other way round: Hexwraith Flame 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 Hexwraith Flame on the colour wheel See Belladonna Green on the colour wheel
All matches: Hexwraith Flame equivalents · Belladonna Green equivalents