a gradient background transitions from dark red at the top to deep blue at the bottom with a rough texture overlay.

gradient background texture red blue abstract wallpaper rough color vibrant backdrop gradientbackground textured design colorful canvas gradienttexture artistic ombre crimson navy spectrum ruby sapphire shades blur pattern bright canvasbackground digital gradientwallpaper hue modern paint saturation seamless surface transition ultramarine variegated visual azure cerulean chroma contrast crimsonbackground deep dynamic elegance ai generated