Feywild Glow vs Pale Yellow

How close are they?

ΔE 8.4, close: similar, with a visible difference side by side. Pale Yellow is more saturated, cooler than Feywild Glow.

Can I use Pale Yellow instead of Feywild Glow?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). Pale Yellow is more saturated, cooler than Feywild Glow.

Can I use Feywild Glow instead of Pale Yellow?

The same difference applies the other way round: Feywild Glow is more muted, 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.