Every January 8th, National Argyle Day pays tribute to one of the most recognizable patterns in fashion and design. Derived from the tartans of the Scottish Highlanders—particularly the Clan Campbell of Argyll—argyle’s signature layered diamond motif has captured our imaginations for centuries. Characterized by intercrossing diagonal lines overlapping colorful diamonds or lozenges, argyle can be found on everything from cozy sweaters to golf socks and even interior décor.