Thousand Sons Blue vs Marine Blue

How close are they?

ΔE 13.1, fair: the same colour family, but not a straight swap. Marine Blue is more muted, warmer than Thousand Sons Blue.

Can I use Marine Blue instead of Thousand Sons Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Marine Blue is more muted, warmer than Thousand Sons Blue.

Can I use Thousand Sons Blue instead of Marine Blue?

The same difference applies the other way round: Thousand Sons Blue is more saturated, 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.