a dynamic background with diagonal streaks of purple and navy blue, overlaid with raindrop textures.

background purple navy blue diagonal streaks texture raindrops dynamic abstract gradient wallpaper rain vibrant artistic color design splash wet droplets modern canvas art water painted brushstroke pattern backdrop colortransition creative bright watercolor drip cooltones moisture saturated contemporary decoration bold vivid atmospheric luxury sleek stylish trendy deepcolors dropleteffect elegant ai generated