Necrolith Bone vs IJA Grey Green

How close are they?

ΔE 6.7, close: similar, with a visible difference side by side. IJA Grey Green is cooler than Necrolith Bone.

Can I use IJA Grey Green instead of Necrolith Bone?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). IJA Grey Green is cooler than Necrolith Bone.

Can I use Necrolith Bone instead of IJA Grey Green?

The same difference applies the other way round: Necrolith Bone is 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.