ΔE 5.2, very close: most people won’t see a difference side by side. Basalt Grey is more muted than WWI French Artillery Grey.
Yes, for most jobs. Very close match (ΔE 5). Basalt Grey is more muted than WWI French Artillery Grey.
The same difference applies the other way round: WWI French Artillery Grey is 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 WWI French Artillery Grey on the colour wheel See Basalt Grey on the colour wheel
All matches: WWI French Artillery Grey equivalents · Basalt Grey equivalents