Celestra Grey vs Cryx Bane Highlight

How close are they?

ΔE 22.2, loose: different enough that you should pick on purpose. Cryx Bane Highlight is a little darker, warmer than Celestra Grey.

Can I use Cryx Bane Highlight instead of Celestra Grey?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 22). Cryx Bane Highlight is a little darker, warmer than Celestra Grey.

Can I use Celestra Grey instead of Cryx Bane Highlight?

The same difference applies the other way round: Celestra Grey 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.