Sunny Flesh vs Feywild Glow

How close are they?

ΔE 8.7, close: similar, with a visible difference side by side. Feywild Glow is more muted, warmer than Sunny Flesh.

Can I use Feywild Glow instead of Sunny Flesh?

Usually, if you are not matching paint already on the model. Close match (ΔE 9). Feywild Glow is more muted, warmer than Sunny Flesh.

Can I use Sunny Flesh instead of Feywild Glow?

The same difference applies the other way round: Sunny Flesh is 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.