Translucent Yellow vs Yellow Green

How close are they?

ΔE 20.5, loose: different enough that you should pick on purpose. Yellow Green is a little darker, more muted, cooler than Translucent Yellow.

Can I use Yellow Green instead of Translucent Yellow?

Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Yellow Green is a little darker, more muted, cooler than Translucent Yellow.

Can I use Translucent Yellow instead of Yellow Green?

The same difference applies the other way round: Translucent Yellow is a little lighter, more saturated, 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.