Ocean Light vs Sky Blue

How close are they?

ΔE 9.0, close: similar, with a visible difference side by side. Sky Blue is more muted, warmer than Ocean Light.

Can I use Sky Blue instead of Ocean Light?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Sky Blue is more muted, warmer than Ocean Light.

Can I use Ocean Light instead of Sky Blue?

The same difference applies the other way round: Ocean Light 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.