ΔE 14.7, fair: the same colour family, but not a straight swap. Phthalo Green (Blue Shade) is cooler than Warboss Green.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Phthalo Green (Blue Shade) is cooler than Warboss Green.
The same difference applies the other way round: Warboss Green is warmer.
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 Warboss Green on the colour wheel See Phthalo Green (Blue Shade) on the colour wheel
All matches: Warboss Green equivalents · Phthalo Green (Blue Shade) equivalents