Shadow Grey vs Thunderhawk Blue

How close are they?

ΔE 10.9, fair: the same colour family, but not a straight swap. Thunderhawk Blue is more saturated, cooler than Shadow Grey.

Can I use Thunderhawk Blue instead of Shadow Grey?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Thunderhawk Blue is more saturated, cooler than Shadow Grey.

Can I use Shadow Grey instead of Thunderhawk Blue?

The same difference applies the other way round: Shadow Grey is more muted, warmer.

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.