Dusty Rose vs Reddish Flesh

How close are they?

ΔE 18.0, loose: different enough that you should pick on purpose. Reddish Flesh is a little lighter, much more muted, warmer than Dusty Rose.

Can I use Reddish Flesh instead of Dusty Rose?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 18). Reddish Flesh is a little lighter, much more muted, warmer than Dusty Rose.

Can I use Dusty Rose instead of Reddish Flesh?

The same difference applies the other way round: Dusty Rose is a little darker, much 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.