ΔE 20.9, loose: different enough that you should pick on purpose. Bogrin Brown is a little darker, warmer than Topaz Skin.
Not as a straight swap; see the closer alternatives below. Loose match (ΔE 21). Bogrin Brown is a little darker, warmer than Topaz Skin.
The same difference applies the other way round: Topaz Skin is a little lighter, 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 Topaz Skin on the colour wheel See Bogrin Brown on the colour wheel
All matches: Topaz Skin equivalents · Bogrin Brown equivalents