Wave Shoal

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="100%"><defs><pattern id="blob-pattern" patternUnits="userSpaceOnUse" width="40" height="20"><path d="M0 8Q10 1 20 8Q30 15 40 8L40 13Q30 20 20 13Q10 6 0 13Z" fill="#1e8fe5" fill-rule="evenodd"/></pattern></defs><path d="M432.5,302.5Q394,355,341,361Q288,367,244.5,384Q201,401,170.5,365.5Q140,330,85,290Q30,250,41,178Q52,106,121,86.5Q190,67,244,85Q298,103,306.5,152.5Q315,202,393,226Q471,250,432.5,302.5Z" fill="url(#blob-pattern)"/></svg>

.blob {
  width: 500px;
  height: 500px;
  clip-path: path("M432.5,302.5Q394,355,341,361Q288,367,244.5,384Q201,401,170.5,365.5Q140,330,85,290Q30,250,41,178Q52,106,121,86.5Q190,67,244,85Q298,103,306.5,152.5Q315,202,393,226Q471,250,432.5,302.5Z");
}

/**
 * Blob — generated by blobs.app.
 *
 * Drop this file into your project and render <Blob /> anywhere.
 */
import { useId } from 'react';

export interface BlobProps {
  /** Rendered width and height. A number is treated as px. Defaults to 100%. */
  size?: number | string;
  /** Class name for the root svg element. */
  className?: string;
  /** Accessible name. Without it the graphic is hidden from assistive tech. */
  title?: string;
}

export function Blob({ size = '100%', className, title }: BlobProps) {
  // Unique per instance, so two blobs on one page never share a def id.
  const uid = useId().replace(/[^a-zA-Z0-9]/g, '');
  const titleId = `blob-title-${uid}`;
  const patternId = `blob-pattern-${uid}`;

  return (
    <svg
      xmlns="http://www.w3.org/2000/svg"
      viewBox="0 0 500 500"
      width={size}
      height={size}
      className={className}
      role={title ? 'img' : undefined}
      aria-labelledby={title ? titleId : undefined}
      aria-hidden={title ? undefined : true}
    >
      {title ? <title id={titleId}>{title}</title> : null}
      <defs>
        <pattern id={patternId} patternUnits="userSpaceOnUse" width="40" height="20">
          <path d="M0 8Q10 1 20 8Q30 15 40 8L40 13Q30 20 20 13Q10 6 0 13Z" fill="#1e8fe5" fillRule="evenodd" />
        </pattern>
      </defs>
      <path
        d="M432.5,302.5Q394,355,341,361Q288,367,244.5,384Q201,401,170.5,365.5Q140,330,85,290Q30,250,41,178Q52,106,121,86.5Q190,67,244,85Q298,103,306.5,152.5Q315,202,393,226Q471,250,432.5,302.5Z"
        fill={`url(#${patternId})`}
      />
    </svg>
  );
}

export default Blob;

// Generated by blobs.app.
//
// Paint the blob:
//   CustomPaint(painter: BlobPainter(), size: const Size(300, 300))
//
// Or clip a widget to it:
//   ClipPath(clipper: BlobClipper(), child: child)

import 'dart:ui' as ui;

import 'package:flutter/material.dart';

/// The blob outline, scaled from its 500x500 design space to [size].
Path buildBlobPath(Size size) {
  final double sx = size.width / 500.0;
  final double sy = size.height / 500.0;
  final Path path = Path();
  path.moveTo(432.5 * sx, 302.5 * sy);
  path.quadraticBezierTo(394.0 * sx, 355.0 * sy, 341.0 * sx, 361.0 * sy);
  path.quadraticBezierTo(288.0 * sx, 367.0 * sy, 244.5 * sx, 384.0 * sy);
  path.quadraticBezierTo(201.0 * sx, 401.0 * sy, 170.5 * sx, 365.5 * sy);
  path.quadraticBezierTo(140.0 * sx, 330.0 * sy, 85.0 * sx, 290.0 * sy);
  path.quadraticBezierTo(30.0 * sx, 250.0 * sy, 41.0 * sx, 178.0 * sy);
  path.quadraticBezierTo(52.0 * sx, 106.0 * sy, 121.0 * sx, 86.5 * sy);
  path.quadraticBezierTo(190.0 * sx, 67.0 * sy, 244.0 * sx, 85.0 * sy);
  path.quadraticBezierTo(298.0 * sx, 103.0 * sy, 306.5 * sx, 152.5 * sy);
  path.quadraticBezierTo(315.0 * sx, 202.0 * sy, 393.0 * sx, 226.0 * sy);
  path.quadraticBezierTo(471.0 * sx, 250.0 * sy, 432.5 * sx, 302.5 * sy);
  path.close();
  return path;
}

class BlobPainter extends CustomPainter {
  const BlobPainter();

  @override
  void paint(Canvas canvas, Size size) {
    final Path path = buildBlobPath(size);
    // Pattern and image fills are not supported in this exporter; use the SVG export.
    final Paint paint = Paint()
      ..isAntiAlias = true
      ..color = const Color(0xFF1E8FE5);
    canvas.drawPath(path, paint);
  }

  @override
  bool shouldRepaint(covariant BlobPainter oldDelegate) => false;
}

/// Clips any widget to the same shape: ClipPath(clipper: BlobClipper(), ...).
class BlobClipper extends CustomClipper<Path> {
  const BlobClipper();

  @override
  Path getClip(Size size) => buildBlobPath(size);

  @override
  bool shouldReclip(covariant CustomClipper<Path> oldClipper) => false;
}