Tallarn Sand vs Ares Flesh

How close are they?

ΔE 16.4, loose: different enough that you should pick on purpose. Ares Flesh is a little lighter, much more muted, warmer than Tallarn Sand.

Can I use Ares Flesh instead of Tallarn Sand?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Ares Flesh is a little lighter, much more muted, warmer than Tallarn Sand.

Can I use Tallarn Sand instead of Ares Flesh?

The same difference applies the other way round: Tallarn Sand 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.