ΔE 16.6, loose: different enough that you should pick on purpose. Pale Blue Grey is a little lighter, more muted than Cryx Bane Highlight.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Pale Blue Grey is a little lighter, more muted than Cryx Bane Highlight.
The same difference applies the other way round: Cryx Bane Highlight is a little darker, more saturated.
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.
See Cryx Bane Highlight on the colour wheel See Pale Blue Grey on the colour wheel
All matches: Cryx Bane Highlight equivalents · Pale Blue Grey equivalents