ΔE 11.5, fair: the same colour family, but not a straight swap. Life Vest Yellow is a little darker, warmer than Sunny Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Life Vest Yellow is a little darker, warmer than Sunny Yellow.
The same difference applies the other way round: Sunny Yellow is a little lighter, 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.
See Sunny Yellow on the colour wheel See Life Vest Yellow on the colour wheel
All matches: Sunny Yellow equivalents · Life Vest Yellow equivalents