Gradient Color Harmony

Abstract liquid gradient background, airbrush style color field, soft organic blurred shapes, smooth transitions, matte flat graphic look, fine grain noise texture, no depth, no horizon, no atmosphere, no realistic lighting, no landscape, no clouds, no sky. Vertical composition. Color placement: deep cobalt blue #0D21A5 concentrated on the upper left and left edge, blending into periwinkle #B9C7F8 in the center area, with turquoise green #2CC8A3 concentrated on the lower left and bottom edge, and muted warm yellow #D1D067 concentrated on the right edge and upper right corner. Soft vignette on edges, center slightly lighter. High resolution.