ΔE 14.0, fair: the same colour family, but not a straight swap. Ice Yellow is a little darker, more muted, warmer than Light Bismuth Yellow.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 14). Ice Yellow is a little darker, more muted, warmer than Light Bismuth Yellow.
The same difference applies the other way round: Light Bismuth Yellow is a little lighter, more saturated, 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 Light Bismuth Yellow on the colour wheel See Ice Yellow on the colour wheel
All matches: Light Bismuth Yellow equivalents · Ice Yellow equivalents