ΔE 11.0, fair: the same colour family, but not a straight swap. Evergreen Fog is more saturated, warmer than Bluish Grey.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Evergreen Fog is more saturated, warmer than Bluish Grey.
The same difference applies the other way round: Bluish Grey is more muted, 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.
See Bluish Grey on the colour wheel See Evergreen Fog on the colour wheel
All matches: Bluish Grey equivalents · Evergreen Fog equivalents