Deep Cyan vs Russian AF Blue

How close are they?

ΔE 15.0, fair: the same colour family, but not a straight swap. Russian AF Blue is a little darker, more muted, cooler than Deep Cyan.

Can I use Russian AF Blue instead of Deep Cyan?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Russian AF Blue is a little darker, more muted, cooler than Deep Cyan.

Can I use Deep Cyan instead of Russian AF Blue?

The same difference applies the other way round: Deep Cyan is a little lighter, 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.