ΔE 11.3, fair: the same colour family, but not a straight swap. Amaranth Red is more muted than Toluidine Red.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Amaranth Red is more muted than Toluidine Red.
The same difference applies the other way round: Toluidine Red is more saturated.
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 Toluidine Red on the colour wheel See Amaranth Red on the colour wheel
All matches: Toluidine Red equivalents · Amaranth Red equivalents