Butterfly pea flowers are used as a natural blue food and beverage colorant in parts of Southeast and South Asia and in contemporary teas worldwide. The anthocyanin-rich pigment changes color in response to acidity, creating the familiar shift from blue toward purple or pink when citrus is added. Other plant parts have separate traditional histories and should not be treated as interchangeable with the flowers.

In contemporary witchcraft, its striking blue color and visible color transformation have encouraged symbolism around intuition, transformation, communication, and altered perspective. Its pH-sensitive color change also supports contemporary transformation, revelation, and threshold symbolism when used with food-safe materials; this is a modern correspondence, not a claim of one ancient universal tradition.