柔和粉彩色虹渐变背景融合粉蓝绿黄等色调

"Pastel Rainbow Gradient Background. This image features a soft pastel rainbow gradient background, blending hues of pink, blue, green, and yellow. The dreamy, colorful design conveys a sense of whimsy and creativity, ideal for digital art, children's designs, or projects needing a gentle and imaginative aesthetic."