Marrying a navy denim jacket with a dark purple pencil skirt is a great idea for a casual yet chic outfit. You could perhaps get a little creative when it comes to footwear and complete your outfit with pumps.
Dark Purple Pencil Skirt with Pumps Smart Casual Warm Weather Outfits In Their 20s
If you don't like putting too much effort into your ensembles, go for a grey short sleeve sweater and a dark purple pencil skirt. Let your sartorial sensibilities really shine by complementing this getup with a pair of pumps.