ΔE 7.3, close: similar, with a visible difference side by side. Guardian Green is more muted than Dark Green INK. They are different kinds of paint: AK Interactive Dark Green INK is an ink, glaze or transparent paint and Army Painter Guardian Green is an opaque base/layer paint, so they won’t behave the same on the model even where the colour is close.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Guardian Green is more muted than Dark Green INK. They are different kinds of paint.
The same difference applies the other way round: Dark Green INK 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 Dark Green INK on the colour wheel See Guardian Green on the colour wheel
All matches: Dark Green INK equivalents · Guardian Green equivalents