ΔE 14.4, fair: the same colour family, but not a straight swap. Silver is a little lighter, more muted than Aged Pewter.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Silver is a little lighter, more muted than Aged Pewter.
The same difference applies the other way round: Aged Pewter 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 Aged Pewter on the colour wheel See Silver on the colour wheel
All matches: Aged Pewter equivalents · Silver equivalents