ΔE 10.8, fair: the same colour family, but not a straight swap. Hammered Copper is noticeably darker than Dead Star.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Hammered Copper is noticeably darker than Dead Star.
The same difference applies the other way round: Dead Star 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.
See Dead Star on the colour wheel See Hammered Copper on the colour wheel
All matches: Dead Star equivalents · Hammered Copper equivalents