ΔE 11.3, fair: the same colour family, but not a straight swap. Pale Rider is a little lighter, more muted than Cosmic Dust.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Pale Rider is a little lighter, more muted than Cosmic Dust.
The same difference applies the other way round: Cosmic Dust 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 Cosmic Dust on the colour wheel See Pale Rider on the colour wheel
All matches: Cosmic Dust equivalents · Pale Rider equivalents