Purple was inspired by a pivotal moment in band member Matt's relationship with his now wife. Matt says, "One afternoon, early in our relationship, we sat beside a lighthouse on Fingal Headland and put everything on the table. It was the first time being completely vulnerable with each other and it opened a door to a whole new dimension in our relationship. It was in that moment that I realized that this was the girl that I wanted to spend the rest of my life with. That place will forever hold a special place in our hearts."