Sunny Yellow vs Lemon Yellow

How close are they?

ΔE 14.8, fair: the same colour family, but not a straight swap. Lemon Yellow is noticeably darker than Sunny Yellow.

Can I use Lemon Yellow instead of Sunny Yellow?

Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Lemon Yellow is noticeably darker than Sunny Yellow.

Can I use Sunny Yellow instead of Lemon Yellow?

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

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.