ΔE 11.1, fair: the same colour family, but not a straight swap. Metallic Red is a little darker, warmer than Zephyr Pink.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Metallic Red is a little darker, warmer than Zephyr Pink.
The same difference applies the other way round: Zephyr Pink is a little lighter, cooler.
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 Zephyr Pink on the colour wheel See Metallic Red on the colour wheel
All matches: Zephyr Pink equivalents · Metallic Red equivalents