RAF PRU Blue BS381C/636 vs Faded P.R.U. Blue

How close are they?

ΔE 2.7, very close: most people won’t see a difference side by side. Our swatches for the two are almost the same.

✓ AK 3rd Generation equivalence chart lists these two as equivalents.

Can I use Faded P.R.U. Blue instead of RAF PRU Blue BS381C/636?

Yes, for most jobs. Very close match (ΔE 3). The swatches are almost the same.

Can I use RAF PRU Blue BS381C/636 instead of Faded P.R.U. Blue?

The same difference applies the other way round.

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.