ΔE 16.8, loose: different enough that you should pick on purpose. Silver is a little lighter, much more muted than Blue Steel.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 17). Silver is a little lighter, much more muted than Blue Steel.
The same difference applies the other way round: Blue Steel is a little darker, much 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 Blue Steel on the colour wheel See Silver on the colour wheel
All matches: Blue Steel equivalents · Silver equivalents