Ironbreaker vs Sterling Silver

How close are they?

ΔE 34.7, poor: a clearly different colour, so not a substitute. Sterling Silver is noticeably lighter than Ironbreaker.

Can I use Sterling Silver instead of Ironbreaker?

Not as a straight swap; see the closer alternatives below. Poor match (ΔE 35). Sterling Silver is noticeably lighter than Ironbreaker.

Can I use Ironbreaker instead of Sterling Silver?

The same difference applies the other way round: Ironbreaker is noticeably darker.

ΔE is the colour difference between our two swatch estimates: under 2 is a perfect match (you’d struggle to tell them apart), under 6 very close, under 10 close, under 15 fair, under 20 loose, under 30 very loose, and 30 or more a poor match. Real paints also differ in finish, coverage and how they thin, so test before you commit.