This is a CG design digital artwork created by the artist 'nucu'. The image features a deep blue sky background with a vibrant, soft-edged rainbow arching across the horizon, displaying a gradient spectrum of red, orange, yellow, green, blue, indigo, and violet. The rainbow connects to thick, white clouds at the bottom, creating a dreamlike visual experience. The minimalist style is healing, with striking color contrasts, making it suitable as a wallpaper that conveys hope and tranquility after the rain.