Royal Blue vs Cygnar Blue Highlight

How close are they?

ΔE 10.5, fair: the same colour family, but not a straight swap. Cygnar Blue Highlight is noticeably lighter than Royal Blue.

Can I use Cygnar Blue Highlight instead of Royal Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Cygnar Blue Highlight is noticeably lighter than Royal Blue.

Can I use Royal Blue instead of Cygnar Blue Highlight?

The same difference applies the other way round: Royal Blue is noticeably darker.

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.