ΔE 12.4, fair: the same colour family, but not a straight swap. Shiny Skintone is a little darker, more muted, warmer than Inner Light.
Only where an exact match doesn’t matter, such as a new unit or a highlight. Fair match (ΔE 12). Shiny Skintone is a little darker, more muted, warmer than Inner Light.
The same difference applies the other way round: Inner Light is a little lighter, more saturated, 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 Inner Light on the colour wheel See Shiny Skintone on the colour wheel
All matches: Inner Light equivalents · Shiny Skintone equivalents