rainbow background colorful gradient
Prompt
Create a clean vertical abstract rainbow background with the look of softly diffused light passing through translucent color gels, no objects or text. The composition is full-frame and edge-to-edge, with a smooth diagonal blend: warm coral red and magenta across the upper area, golden yellow sweeping through the upper middle, fresh lime and soft green in the center, turquoise and cyan drifting into saturated blue toward the lower right, and violet-purple glowing near the lower left. Lighting should feel even, luminous, and airy, with a calm optimistic mood and a modern stock-background aesthetic. Use ultra-smooth gradients, subtle natural grain, gentle falloff, shot as an out-of-focus macro light study on a 50mm lens, f/2.8.
Negative Prompt
people, faces, logos, watermarks, readable text, objects, hard edges, banding, pixelation, posterization, harsh contrast, HDR halos, oversaturation, dirty texture, vignette, geometric shapes, symbols, landmarks