In Irish mythology, the Tuatha D Danann had radiant blue eyes, making blue a sacred color believed to bring blessings, and historically, Irish brides often wore blue dresses and when Bronagh came Molly Blue Tulle Bardot Dress with Scattered Pearls and Ruffled Skir Mizz Rio Blue Wedding Dress The traditional Irish bride wore a blue wedding dress rather than white. This color was a symbol of purity in ancient times before white became the universal symbol for Old Irish Wedding Traditions St. Joseph's Secondary School Our Irish Heritage