Cryx Bane Highlight vs Stone Grey

How close are they?

ΔE 7.4, close: similar, with a visible difference side by side. Stone Grey is a little darker, warmer than Cryx Bane Highlight.

Can I use Stone Grey instead of Cryx Bane Highlight?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Stone Grey is a little darker, warmer than Cryx Bane Highlight.

Can I use Cryx Bane Highlight instead of Stone Grey?

The same difference applies the other way round: Cryx Bane Highlight is a little lighter, 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.