abstract blurred background. a beautiful wavy transition from the deep purplish-red color of byzantium to green-blue, gradient,

abstract advertising backdrop background banner blue blur blurred blurry bright byzantium card catchy color colorful concept contrast decoration deep defocus design effect elegant festive flowing glow gradient greenblue light magic page paint purple purplish red shine shiny shop smooth soft space spark striped template texture transition turquoise vector wallpaper wavy web