彩虹图示：经典七彩拱形彩虹矢量图 | Free Download #1998777 (License: Personal Use)

This digital illustration features a perfectly symmetrical rainbow arch composed of seven distinct, smoothly blended bands: red, orange, yellow, green, blue, indigo, and violet. Rendered with crisp edges and uniform saturation against a pure black backdrop, it ensures maximum contrast and versatility for overlay or print use. The image is scalable and suitable for both web and print media without loss of quality.

Commonly used in educational websites (e.g., science lessons on light refraction), LGBTQ+ pride campaigns, children’s content, weather apps, and inspirational graphic design. Matches user intent for symbolic imagery representing hope, unity, or natural phenomena.