Generate an image of a vibrant blue butterfly with large wings, showcasing a gradient from deep blue to turquoise. The butterfly should be centered against a plain white background, emphasizing its intricate wing patterns and delicate antennae.

Generate an image of a vibrant blue butterfly with large wings, showcasing a gradient from deep blue to turquoise. The butterfly should be centered against a plain white background, emphasizing its intricate wing patterns and delicate antennae.