swar ‧ thy /ˈswɔːði $ -ɔːr-/ BrE AmE adjective
[ Date: 1500-1600 ; Origin: swarty 'swarthy' (16-19 centuries) , from swart 'dark, swarthy' (11-20 centuries) , from Old English sweart ]
someone who is swarthy has dark skin:
a small, swarthy man
a swarthy complexion