Uniform Sand Yellow FS-32555 vs US Earth Yellow

How close are they?

ΔE 7.5, close: similar, with a visible difference side by side. US Earth Yellow is cooler than Uniform Sand Yellow FS-32555.

Can I use US Earth Yellow instead of Uniform Sand Yellow FS-32555?

Usually, if you are not matching paint already on the model. Close match (ΔE 8). US Earth Yellow is cooler than Uniform Sand Yellow FS-32555.

Can I use Uniform Sand Yellow FS-32555 instead of US Earth Yellow?

The same difference applies the other way round: Uniform Sand Yellow FS-32555 is 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.