Marine Blue vs Twilight Sky

How close are they?

ΔE 11.8, fair: the same colour family, but not a straight swap. Twilight Sky is noticeably lighter, more saturated than Marine Blue.

Can I use Twilight Sky instead of Marine Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Twilight Sky is noticeably lighter, more saturated than Marine Blue.

Can I use Marine Blue instead of Twilight Sky?

The same difference applies the other way round: Marine Blue is noticeably darker, more muted.

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.