ΔE 3.0, very close: most people won’t see a difference side by side. Intermediate Blue is cooler than WWI French Artillery Grey.
Yes, for most jobs. Very close match (ΔE 3). Intermediate Blue is cooler than WWI French Artillery Grey.
The same difference applies the other way round: WWI French Artillery Grey is warmer.
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 Intermediate Blue on the colour wheel
All matches: WWI French Artillery Grey equivalents · Intermediate Blue equivalents