ΔE 9.0, close: similar, with a visible difference side by side. Lizard Green is a little lighter, more saturated than Grim Black.
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Lizard Green is a little lighter, more saturated than Grim Black.
The same difference applies the other way round: Grim Black is a little darker, 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 Grim Black on the colour wheel See Lizard Green on the colour wheel
All matches: Grim Black equivalents · Lizard Green equivalents