Arctic Gem vs Cyan Blue

How close are they?

ΔE 14.6, fair: the same colour family, but not a straight swap. Cyan Blue is noticeably darker, warmer than Arctic Gem.

Can I use Cyan Blue instead of Arctic Gem?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Cyan Blue is noticeably darker, warmer than Arctic Gem.

Can I use Arctic Gem instead of Cyan Blue?

The same difference applies the other way round: Arctic Gem is noticeably 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.