Cobalt Coil

<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 500 500" width="100%"><path d="M463.5,296Q440,342,393.5,356.5Q347,371,317.5,394.5Q288,418,255,395Q222,372,168.5,396Q115,420,103,373.5Q91,327,69,288.5Q47,250,76.5,215.5Q106,181,110,130.5Q114,80,169.5,110.5Q225,141,254,124Q283,107,300.5,136Q318,165,363.5,169.5Q409,174,448,212Q487,250,463.5,296Z" fill="none" stroke="#0668b6" stroke-width="7"/></svg>

.blob {
  width: 500px;
  height: 500px;
  clip-path: path("M463.5,296Q440,342,393.5,356.5Q347,371,317.5,394.5Q288,418,255,395Q222,372,168.5,396Q115,420,103,373.5Q91,327,69,288.5Q47,250,76.5,215.5Q106,181,110,130.5Q114,80,169.5,110.5Q225,141,254,124Q283,107,300.5,136Q318,165,363.5,169.5Q409,174,448,212Q487,250,463.5,296Z");
}

/**
 * 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}`;

  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}
      <path
        d="M463.5,296Q440,342,393.5,356.5Q347,371,317.5,394.5Q288,418,255,395Q222,372,168.5,396Q115,420,103,373.5Q91,327,69,288.5Q47,250,76.5,215.5Q106,181,110,130.5Q114,80,169.5,110.5Q225,141,254,124Q283,107,300.5,136Q318,165,363.5,169.5Q409,174,448,212Q487,250,463.5,296Z"
        fill="none"
        stroke="#0668b6"
        strokeWidth={7}
      />
    </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(463.5 * sx, 296.0 * sy);
  path.quadraticBezierTo(440.0 * sx, 342.0 * sy, 393.5 * sx, 356.5 * sy);
  path.quadraticBezierTo(347.0 * sx, 371.0 * sy, 317.5 * sx, 394.5 * sy);
  path.quadraticBezierTo(288.0 * sx, 418.0 * sy, 255.0 * sx, 395.0 * sy);
  path.quadraticBezierTo(222.0 * sx, 372.0 * sy, 168.5 * sx, 396.0 * sy);
  path.quadraticBezierTo(115.0 * sx, 420.0 * sy, 103.0 * sx, 373.5 * sy);
  path.quadraticBezierTo(91.0 * sx, 327.0 * sy, 69.0 * sx, 288.5 * sy);
  path.quadraticBezierTo(47.0 * sx, 250.0 * sy, 76.5 * sx, 215.5 * sy);
  path.quadraticBezierTo(106.0 * sx, 181.0 * sy, 110.0 * sx, 130.5 * sy);
  path.quadraticBezierTo(114.0 * sx, 80.0 * sy, 169.5 * sx, 110.5 * sy);
  path.quadraticBezierTo(225.0 * sx, 141.0 * sy, 254.0 * sx, 124.0 * sy);
  path.quadraticBezierTo(283.0 * sx, 107.0 * sy, 300.5 * sx, 136.0 * sy);
  path.quadraticBezierTo(318.0 * sx, 165.0 * sy, 363.5 * sx, 169.5 * sy);
  path.quadraticBezierTo(409.0 * sx, 174.0 * sy, 448.0 * sx, 212.0 * sy);
  path.quadraticBezierTo(487.0 * sx, 250.0 * sy, 463.5 * sx, 296.0 * sy);
  path.close();
  return path;
}

class BlobPainter extends CustomPainter {
  const BlobPainter();

  @override
  void paint(Canvas canvas, Size size) {
    final Path path = buildBlobPath(size);
    final Paint paint = Paint()
      ..isAntiAlias = true
      ..color = const Color(0xFF0668B6)
      ..style = PaintingStyle.stroke
      ..strokeWidth = 7.0 * (size.width / 500.0);
    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;
}