cosmic gradient: ethereal abstract backgrounds in deep blues and purples

abstract background cosmic gradient deep blues purples vibrant pink glow ethereal atmosphere smooth color transition nebula-inspired digital art minimalist design celestial ambiance futuristic aesthetic dream-like quality luminous hues space-inspired palette fluid blend colors modern artistic backgrounds dreamy visuals creative graphics colorful nebulae aesthetics designs atmospheric artwork contemporary visual inspiration gradient space themes expression innovative art styles ai-generated unique stunning gradients