ΔE 14.2, fair: the same colour family, but not a straight swap. Light Green Grey is noticeably lighter, more muted than Cryx Bane Highlight.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Light Green Grey is noticeably lighter, more muted than Cryx Bane Highlight.
The same difference applies the other way round: Cryx Bane Highlight is noticeably 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 Light Green Grey on the colour wheel
All matches: Cryx Bane Highlight equivalents · Light Green Grey equivalents