ΔE 4.2, very close: most people won’t see a difference side by side. Grey Blue RLM84 is a little lighter than Light Aircraft Gray BS381C 627.
Yes, for most jobs. Very close match (ΔE 4). Grey Blue RLM84 is a little lighter than Light Aircraft Gray BS381C 627.
The same difference applies the other way round: Light Aircraft Gray BS381C 627 is a little darker.
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 Light Aircraft Gray BS381C 627 on the colour wheel See Grey Blue RLM84 on the colour wheel
All matches: Light Aircraft Gray BS381C 627 equivalents · Grey Blue RLM84 equivalents