Dark Sky vs Dk Mediterr. Blue

How close are they?

ΔE 7.9, close: similar, with a visible difference side by side. Dk Mediterr. Blue is more muted, cooler than Dark Sky.

Can I use Dk Mediterr. Blue instead of Dark Sky?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Dk Mediterr. Blue is more muted, cooler than Dark Sky.

Can I use Dark Sky instead of Dk Mediterr. Blue?

The same difference applies the other way round: Dark Sky 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.