Hexos Palesun vs Pale Yellow

How close are they?

ΔE 15.5, loose: different enough that you should pick on purpose. Pale Yellow is much more muted, warmer than Hexos Palesun.

Can I use Pale Yellow instead of Hexos Palesun?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 15). Pale Yellow is much more muted, warmer than Hexos Palesun.

Can I use Hexos Palesun instead of Pale Yellow?

The same difference applies the other way round: Hexos Palesun is 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.