ΔE 6.9, close: similar, with a visible difference side by side. Sky Blue is more muted than Light Blue.
✓ AMMO ATOM user guide chart lists these two as equivalents.
Usually, if you are not matching paint already on the model. Close match (ΔE 7). Sky Blue is more muted than Light Blue.
The same difference applies the other way round: Light Blue is more saturated.
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 Blue on the colour wheel See Sky Blue on the colour wheel
All matches: Light Blue equivalents · Sky Blue equivalents