Colorful circles in a dynamic pattern captivating background for websites and digital platforms

close-up colorful circles circular different sizes different colors bright floating overlapping standing alone background dark black contrast visually appealing website digital platform eye-catching movement energy engagement content celebration festivity red orange yellow green blue purple random pattern dynamic draws the eye sense of movement sense of energy random arrangement dynamic image attention-grabbing promotions visual stimulation vibrant creative artistic background image color scheme photography graphic design modern abstract