Thunderhawk Blue vs Ultramarine Shadow

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Ultramarine Shadow is noticeably darker than Thunderhawk Blue.

Can I use Ultramarine Shadow instead of Thunderhawk Blue?

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

Can I use Thunderhawk Blue instead of Ultramarine Shadow?

The same difference applies the other way round: Thunderhawk Blue is noticeably lighter.

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.