colorful gradient background with soft pastel colors, blending smoothly from blue to yellow, creating serene and vibrant

gradient background pastel colors blue yellow pink soft fabric texture smooth vibrant colorful wave design abstract light airy artistic flowing silk textile rainbow hue warm cool blend gentle colorfulbackground softcolors artisticdesign serene modern creative visual aesthetic colorfultexture flowingfabric lightpastel smoothtransition vibrantcolors softgradient artisticbackground colorfulwave pastelgradient fabrictexture airydesign flowingcolors serenebackground