ΔE 12.7, fair: the same colour family, but not a straight swap. M495 Light Gray is noticeably lighter, more muted than Bastion Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). M495 Light Gray is noticeably lighter, more muted than Bastion Grey.
The same difference applies the other way round: Bastion Grey 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 Bastion Grey on the colour wheel See M495 Light Gray on the colour wheel
All matches: Bastion Grey equivalents · M495 Light Gray equivalents