Thunderhawk Blue vs Darkness Grey

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Darkness Grey is much more muted than Thunderhawk Blue.

Can I use Darkness Grey instead of Thunderhawk Blue?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Darkness Grey is much more muted than Thunderhawk Blue.

Can I use Thunderhawk Blue instead of Darkness Grey?

The same difference applies the other way round: Thunderhawk Blue is much more saturated.

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.