Gradual blue nail design long style

Quick answer：

Gradual blue nail design refers to a nail art style where the color of the nail gradually transitions from lighter to darker shades of blue. This style is often considered elegant and fashionable, and is suitable for both formal and casual occasions. Long style indicates that the nails are extended or elongated beyond their natural length. Such designs can be created using various techniques, including freehand painting, stencils, or nail art pens.