ΔE 8.7, close: similar, with a visible difference side by side. Light Blue is more muted, warmer than Pale Grey (RLM 76).
Usually, if you are not matching paint already on the model. Close match (ΔE 9). Light Blue is more muted, warmer than Pale Grey (RLM 76).
The same difference applies the other way round: Pale Grey (RLM 76) is more saturated, 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 Pale Grey (RLM 76) on the colour wheel See Light Blue on the colour wheel
All matches: Pale Grey (RLM 76) equivalents · Light Blue equivalents