Topaz Skin vs Kalahari Orange

How close are they?

ΔE 15.7, loose: different enough that you should pick on purpose. Kalahari Orange is much more saturated, warmer than Topaz Skin.

Can I use Kalahari Orange instead of Topaz Skin?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 16). Kalahari Orange is much more saturated, warmer than Topaz Skin.

Can I use Topaz Skin instead of Kalahari Orange?

The same difference applies the other way round: Topaz Skin is much more muted, 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.