ΔE 11.0, fair: the same colour family, but not a straight swap. Tourmaline Skin is a little lighter, cooler than Warm Skin.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 11). Tourmaline Skin is a little lighter, cooler than Warm Skin.
The same difference applies the other way round: Warm Skin is a little darker, 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 Warm Skin on the colour wheel See Tourmaline Skin on the colour wheel
All matches: Warm Skin equivalents · Tourmaline Skin equivalents