ΔE 12.5, fair: the same colour family, but not a straight swap. Blackened Steel is a little lighter, more muted than Warplock Bronze.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Blackened Steel is a little lighter, more muted than Warplock Bronze.
The same difference applies the other way round: Warplock Bronze is a little darker, 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.
See Warplock Bronze on the colour wheel See Blackened Steel on the colour wheel
All matches: Warplock Bronze equivalents · Blackened Steel equivalents