ΔE 8.4, close: similar, with a visible difference side by side. Emerald Green is more saturated, warmer than Obsidian Pigment Toner.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Emerald Green is more saturated, warmer than Obsidian Pigment Toner.
The same difference applies the other way round: Obsidian Pigment Toner is more muted, cooler.
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 Obsidian Pigment Toner on the colour wheel See Emerald Green on the colour wheel
All matches: Obsidian Pigment Toner equivalents · Emerald Green equivalents