ΔE 11.9, fair: the same colour family, but not a straight swap. Ivory is a little darker, warmer than Blue FS35622.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Ivory is a little darker, warmer than Blue FS35622.
The same difference applies the other way round: Blue FS35622 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 Blue FS35622 on the colour wheel See Ivory on the colour wheel
All matches: Blue FS35622 equivalents · Ivory equivalents