ΔE 14.6, fair: the same colour family, but not a straight swap. Jade Green is more saturated, warmer than Royal Cloak.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 15). Jade Green is more saturated, warmer than Royal Cloak.
The same difference applies the other way round: Royal Cloak is more muted, 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 Royal Cloak on the colour wheel See Jade Green on the colour wheel
All matches: Royal Cloak equivalents · Jade Green equivalents