ΔE 16.1, loose: different enough that you should pick on purpose. Natural Steel is noticeably lighter, more saturated than Dark Net.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Natural Steel is noticeably lighter, more saturated than Dark Net.
The same difference applies the other way round: Dark Net is noticeably darker, 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 Dark Net on the colour wheel See Natural Steel on the colour wheel
All matches: Dark Net equivalents · Natural Steel equivalents