Gloss Seablue FS151042 vs Midnight Purple

How close are they?

ΔE 13.9, fair: the same colour family, but not a straight swap. Midnight Purple is a little lighter, more saturated than Gloss Seablue FS151042.

Can I use Midnight Purple instead of Gloss Seablue FS151042?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Midnight Purple is a little lighter, more saturated than Gloss Seablue FS151042.

Can I use Gloss Seablue FS151042 instead of Midnight Purple?

The same difference applies the other way round: Gloss Seablue FS151042 is a little 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.