a smooth gradient background transitioning from deep blue to vivid purple with a subtle texture.

gradient background blue purple smooth texture abstract wallpaper vivid subtle backdrop color design blend bright canvas modern art digital serene tranquil minimalist pastel gradientwallpaper webdesign spectrum creative soothing colortransition simplicity wallart soft radiant calm peaceful vibrant colorgradient gradienttexture hues aesthetic contemporary decorative elegant gradientbackground atmospheric luxe stylish ombre ai generated