Dargan rhymes with:
bargain, gargan, hargan, jargon, largen, sargen, vonbargen, bargain, borgen, dorgan, gargan, goergen, gorgon, gorgone, hargan, horgan, jargon, kollmorgen, largen, morgan, morgen, morgun, organ, sargen, sorgen, steinbergen, vonbargen
Dargan sounds like:
darken, deerskin, derasmo, derchin, derickson, derision, derksen, derrickson, dershem, dirickson, dirksen, doersam, dorgan, drachma, draconian, dragan, dragon, dragone, draughn, draughon, dreessen, dresen, dressen, driessen, druckman, drugan, duerksen, duerson, durakon, durgan, durgin, durkheim, durkin, dworkin