What is marian blue?

Marian Blue is a shade of blue that is often associated with the Virgin Mary in Christian iconography. It is said to represent purity, spiritual growth, and protection. The color is often used in religious art and clothing associated with the Virgin Mary, and is sometimes referred to simply as "Mary Blue" in reverence to her. Marian Blue is also used in various Christian devotions and practices, such as praying the rosary or attending Marian processions. It is a symbol of devotion to the Mother of God and is considered a powerful tool for spiritual meditation and contemplation.