Skavenblight Dinge vs Viridian Grim

How close are they?

ΔE 9.2, close: similar, with a visible difference side by side. Viridian Grim is a little darker, cooler than Skavenblight Dinge.

Can I use Viridian Grim instead of Skavenblight Dinge?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Viridian Grim is a little darker, cooler than Skavenblight Dinge.

Can I use Skavenblight Dinge instead of Viridian Grim?

The same difference applies the other way round: Skavenblight Dinge is a little lighter, warmer.

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.