ΔE 17.7, loose: different enough that you should pick on purpose. Ivory Tusk is a little darker, more muted than Wilted Rose.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Ivory Tusk is a little darker, more muted than Wilted Rose.
The same difference applies the other way round: Wilted Rose is a little lighter, 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 Wilted Rose on the colour wheel See Ivory Tusk on the colour wheel
All matches: Wilted Rose equivalents · Ivory Tusk equivalents