St. Patrick’s Day usually conjures images of partying, Catholicism, Irish nationalism and, perhaps most famously, the color green: green clothes, green shamrocks, green beer and green rivers. But the holiday used to be a solemn feast day when you’d be far more likely to see the color blue.

St. Patrick's Day, marked on March 17th, is an alive and kicking festival commemorating Ireland's patron saint and reflecting the nation's rich cultural heritage. The most iconic feature of this celebratory day is the ubiquitous colour green,

St. Patrick's Day's color transitioned from blue to green, reflecting Irish independence and identity changes.