ΔE 7.9, close: similar, with a visible difference side by side. Blue Gray is more muted, cooler than Alaitoc Blue.
Usually, if you are not matching paint already on the model. Close match (ΔE 8). Blue Gray is more muted, cooler than Alaitoc Blue.
The same difference applies the other way round: Alaitoc Blue is more saturated, warmer.
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 Alaitoc Blue on the colour wheel See Blue Gray on the colour wheel
All matches: Alaitoc Blue equivalents · Blue Gray equivalents