JavaScript-Sandpit/background_colour_mouse_movement.html at main · johnstack/JavaScript-Sandpit · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8" />
  <meta name="viewport" content="width=device-width, initial-scale=1.0"/>
  <title>Mouse Movement Background</title>
  <style>
    body {
      margin: 0;
      height: 100vh;
      transition: background-color 0.1s linear;
      display: flex;
      justify-content: center;
      align-items: center;
      font-family: sans-serif;
      color: #fff;
    }

  </style>
</head>
<body>

  <script>
    document.addEventListener('mousemove', function (e) {
      const x = e.clientX / window.innerWidth;
      const y = e.clientY / window.innerHeight;

      // Blue tones (cool tones)
      const blueRed = Math.round(150 + x * 50);    // 150–200
      const blueGreen = Math.round(180 + y * 40);  // 180–220
      const blueBlue = Math.round(210 + x * 30);   // 210–240

      // Brown tones (warm tones)
      const brownRed = Math.round(180 + x * 40);   // 180–220
      const brownGreen = Math.round(160 + y * 30); // 160–190
      const brownBlue = Math.round(130 + y * 20);  // 130–150

      // Blend between brown and blue tones
      const mixFactor = 0.5; // 0 = full brown, 1 = full blue
      const red = Math.round(brownRed * (1 - mixFactor) + blueRed * mixFactor);
      const green = Math.round(brownGreen * (1 - mixFactor) + blueGreen * mixFactor);
      const blue = Math.round(brownBlue * (1 - mixFactor) + blueBlue * mixFactor);

      document.body.style.backgroundColor = `rgb(${red}, ${green}, ${blue})`;
    });
  </script>
</body>