Terminatus Stone vs Off-White

How close are they?

ΔE 7.6, close: similar, with a visible difference side by side. Off-White is a little lighter than Terminatus Stone.

Can I use Off-White instead of Terminatus Stone?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Off-White is a little lighter than Terminatus Stone.

Can I use Terminatus Stone instead of Off-White?

The same difference applies the other way round: Terminatus Stone is a little darker.

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.