ΔE 12.4, fair: the same colour family, but not a straight swap. Natural Steel is a little lighter, more saturated than Shadowed Steel.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Natural Steel is a little lighter, more saturated than Shadowed Steel.
The same difference applies the other way round: Shadowed Steel is a little 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 Shadowed Steel on the colour wheel See Natural Steel on the colour wheel
All matches: Shadowed Steel equivalents · Natural Steel equivalents