Sunny Yellow vs Yellow Green

How close are they?

ΔE 14.2, fair: the same colour family, but not a straight swap. Yellow Green is noticeably darker, more saturated than Sunny Yellow.

Can I use Yellow Green instead of Sunny Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Yellow Green is noticeably darker, more saturated than Sunny Yellow.

Can I use Sunny Yellow instead of Yellow Green?

The same difference applies the other way round: Sunny Yellow is noticeably lighter, more muted.

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.