abstract concentric half circles in blue background

abstract abstraction backdrop backdrops background backgrounds banner banners beams beautiful blue blur blurred blurring blurry blurs bright brilliant circle circles color colorful colour colourful computer concentric cool cosmic cosmos dark deep depth design desktop dream dreamy energetic energy future futuristic glitter glow glowing gradated gradation gradient graphic graphics half homocentric light lighting modern outer poster pretty rays retro ring rings round rounds screen shine shining shiny sky smooth space spark sparkle style template universal universe vista wallpaper web website wide