Light Orange vs Ratskin Flesh

How close are they?

ΔE 21.0, loose: different enough that you should pick on purpose. Ratskin Flesh is noticeably darker, much more muted, warmer than Light Orange.

Can I use Ratskin Flesh instead of Light Orange?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Ratskin Flesh is noticeably darker, much more muted, warmer than Light Orange.

Can I use Light Orange instead of Ratskin Flesh?

The same difference applies the other way round: Light Orange is noticeably lighter, 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.