a multicolored gradient making a beautiful tunnel, a chromatic wheel background

ai-generated backdrop background backgrounds banner banners blue chimera chromatic colours daydream deep-sleep dream dreaming dreamland dreamscape fantasy hypnosis hypnotic hypnotised hypnotism hypnotized illusion imagination inspiring intense-colors mesmeric mesmerizing multicolor multicolored multicolour multicoloured multihued orange prism psychedelic rainbow sleep-inducing spectrum spiral spirals surreal texture textures vibrant violet vision vivid wheel yellow