Power Blue vs Royal Blue

How close are they?

ΔE 10.5, fair: the same colour family, but not a straight swap. Royal Blue is a little darker, warmer than Power Blue.

Can I use Royal Blue instead of Power Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 10). Royal Blue is a little darker, warmer than Power Blue.

Can I use Power Blue instead of Royal Blue?

The same difference applies the other way round: Power Blue is a little lighter, 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.