ΔE 10.9, fair: the same colour family, but not a straight swap. Screamer Pink is a little darker, more saturated, warmer than Space Magenta.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Screamer Pink is a little darker, more saturated, warmer than Space Magenta.
The same difference applies the other way round: Space Magenta is a little lighter, more muted, 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 Space Magenta on the colour wheel See Screamer Pink on the colour wheel
All matches: Space Magenta equivalents · Screamer Pink equivalents