tranquil blue swirls background

pastel blue background serene minimalistic swirls white calm tranquil wallpaper texture light pale design abstract elegant simple graceful flowing curves gentle relaxing peaceful subtle faint artistic soothing contemporary stylish chic modern clean airy fresh cool delicate whimsical dreamy ethereal zenlike harmonious quiet muted understated nondistracting seamless blend gradient monochrome tinted hue saturation brightness lightness aesthetic digital print canvas interior decor