ΔE 7.3, close: similar, with a visible difference side by side. Pale Blue is a little darker, warmer than RLM 78 Light Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Pale Blue is a little darker, warmer than RLM 78 Light Blue.
The same difference applies the other way round: RLM 78 Light Blue 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 RLM 78 Light Blue on the colour wheel See Pale Blue on the colour wheel
All matches: RLM 78 Light Blue equivalents · Pale Blue equivalents