ΔE 4.7, very close: most people won’t see a difference side by side. Intermediate Blue is a little darker, warmer than RAF PRU Blue BS381C/636.
Yes, for most jobs. Very close match (ΔE 5). Intermediate Blue is a little darker, warmer than RAF PRU Blue BS381C/636.
The same difference applies the other way round: RAF PRU Blue BS381C/636 is a little lighter, 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 RAF PRU Blue BS381C/636 on the colour wheel See Intermediate Blue on the colour wheel
All matches: RAF PRU Blue BS381C/636 equivalents · Intermediate Blue equivalents