Morning Sky vs Medium Grey Blue

How close are they?

ΔE 13.8, fair: the same colour family, but not a straight swap. Medium Grey Blue is a little lighter, more muted, warmer than Morning Sky.

Can I use Medium Grey Blue instead of Morning Sky?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Medium Grey Blue is a little lighter, more muted, warmer than Morning Sky.

Can I use Morning Sky instead of Medium Grey Blue?

The same difference applies the other way round: Morning Sky is a little darker, 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.