ΔE 13.2, fair: the same colour family, but not a straight swap. Rosy Flesh is a little lighter, more muted, warmer than Count of Tuscany.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 13). Rosy Flesh is a little lighter, more muted, warmer than Count of Tuscany.
The same difference applies the other way round: Count of Tuscany is a little darker, 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 Count of Tuscany on the colour wheel See Rosy Flesh on the colour wheel
All matches: Count of Tuscany equivalents · Rosy Flesh equivalents