ΔE 6.1, close: similar, with a visible difference side by side. Oily Steel is more saturated than Death Metal.
Usually, if you are not matching paint already on the model. Close match (ΔE 6). Oily Steel is more saturated than Death Metal.
The same difference applies the other way round: Death Metal is more muted.
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 Death Metal on the colour wheel See Oily Steel on the colour wheel
All matches: Death Metal equivalents · Oily Steel equivalents