"Butterfly Blue" is a vibrant shade of blue that resembles the color of certain butterfly wings, particularly those of the Morpho butterfly. This color is often associated with tranquility and beauty, making it popular in art and design. In nature, the Morpho butterfly is known for its striking iridescent blue wings, which can appear different shades depending on the angle of light. The term "Butterfly Blue" can also refer to various products, such as paints and fabrics, that capture this enchanting hue.