ΔE 12.9, fair: the same colour family, but not a straight swap. Pink is a little darker, more muted, warmer than Orchid.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Pink is a little darker, more muted, warmer than Orchid.
The same difference applies the other way round: Orchid is a little lighter, more saturated, 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 Orchid on the colour wheel See Pink on the colour wheel
All matches: Orchid equivalents · Pink equivalents