Light Bismuth Yellow vs Toxic Yellow

How close are they?

ΔE 14.6, fair: the same colour family, but not a straight swap. Toxic Yellow is noticeably darker, more saturated than Light Bismuth Yellow.

Can I use Toxic Yellow instead of Light Bismuth Yellow?

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

Can I use Light Bismuth Yellow instead of Toxic Yellow?

The same difference applies the other way round: Light Bismuth 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.