ΔE 27.3, loose: different enough that you should pick on purpose. Pearl Light Red is noticeably lighter, much more muted than Zephyr Pink. They are different kinds of paint: Army Painter Zephyr Pink is a metallic and Tamiya Pearl Light Red is a pearl paint, so they won’t behave the same on the model even where the colour is close.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 27). Pearl Light Red is noticeably lighter, much more muted than Zephyr Pink. They are different kinds of paint.
The same difference applies the other way round: Zephyr Pink is noticeably 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 Zephyr Pink on the colour wheel See Pearl Light Red on the colour wheel
All matches: Zephyr Pink equivalents · Pearl Light Red equivalents