Dusty Earth vs Rakarth Flesh

How close are they?

ΔE 7.1, close: similar, with a visible difference side by side. Rakarth Flesh is more muted, cooler than Dusty Earth.

Can I use Rakarth Flesh instead of Dusty Earth?

Usually, if you are not matching paint already on the model. Close match (ΔE 7). Rakarth Flesh is more muted, cooler than Dusty Earth.

Can I use Dusty Earth instead of Rakarth Flesh?

The same difference applies the other way round: Dusty Earth is more saturated, warmer.

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.