ColorMix/colors.html at main · deftio/ColorMix · GitHub

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<!DOCTYPE html>
<html lang="en">
<!-- M A Chatterje (c) 2024 -->
<head>
  <meta charset="UTF-8">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/css/bootstrap.min.css" rel="stylesheet"
    integrity="sha384-EVSTQN3/azprG1Anm3QDgpJLIm9Nao0Yz1ztcQTwFspd3yD65VohhpuuCOmLASjC" crossorigin="anonymous">
  <script src="https://cdn.jsdelivr.net/npm/bootstrap@5.0.2/dist/js/bootstrap.bundle.min.js"
    integrity="sha384-MrcW6ZMFYlzcLA8Nl+NtUVF0sA7MsXsP1UyJoMp4YLEuNSfAP+JcXn/tWtIaxVXM"
    crossorigin="anonymous"></script>
  <title>Color Mixing Demo</title>
  <style>
    body {
      font-family: Arial, sans-serif;
    }

    .container {
      display: flex;
      justify-content: space-around;
      margin-top: 20px;
    }

    .color-box {
      width: 100%;
      height: 40vh;
      /* border: 1px solid #000; */
    }

    .slider-container {
      text-align: left;
    }
    label {
      width: 15%;
    }
    input {
      width: 50%;
      left : 0;
    }
    .red {
      color: red;
    }
    .blue {
      color: blue;
    }
    .green {
      color: green;
    }
    .cyan {
      color: cyan;
    }
    .magenta {
      color: magenta;
    }
    .yellow {
      color: yellow
    }
    .cyan, .magenta, .yellow {
      background-color: #bbb;
      font-weight: 600;
      padding : 5px;
      border-radius: 4px;
    }
    label {
      margin: 4px;
      padding: 5px;
      border-radius: 4px;
      background-color: #bbb !important;
      font-weight : 600;
      font-size: 1.2em;
      min-width: 5em;
    }
    input {
      width: 50%;
    }
    #additiveColors, #subtractiveColors{
      width: 100%;
    }
    .explainText {
      height: 15vh;
    }
  </style>

</head>

<body>
  <div class="container">
    <h1>Color Mixing Demo</h1>
  </div>
  <div class="container">
    <div id="additiveColors">
      <h2>Additive Colors (RGB)</h2>
    <div class="explainText">
      Light sources (like the sun or lightbulbs) are additively mixed to create color.<br>
      The primary additive colors are <span class="red">red</span>, <span class="green">green</span>, and <span class="blue">blue</span>.
    </div>
      <br>
      <div class="color-box" id="additive-color"></div>
      <br>

      <div id="additive-value">rgb(0,0,0)</div>
      <br>

      <div class="slider-container">
        <label class="red">Red: </label><input type="range" id="r-slider" min="0" max="255" value="10" oninput="updateAdditiveColor()"><br>
        <label class="green">Green: </label><input type="range" id="g-slider" min="0" max="255" value="30" oninput="updateAdditiveColor()"><br>
        <label class="blue">Blue: </label><input type="range" id="b-slider" min="0" max="255" value="50" oninput="updateAdditiveColor()">

      </div>
    </div>
    <div id="subtractiveColors">
      <h2>Subtractive Colors (CMY)</h2>    <div class="explainText">
      Light reflectors and absorbers, such as paints, are subtractively mixed to create color.<br>
      The primary subtractive colors are <span class="cyan">cyan</span>, <span class="magenta">magenta</span>, and <span class="yellow">yellow</span>.
      </div><br>
      <div class="color-box" id="subtractive-color" style="background-color: #ffffff;"></div>
      <br>
      <div id="subtractive-value">rgb(255,255,255)</div>
      <br>
      <div class="slider-container">
        <label class="cyan">Cyan: </label><input type="range" id="c-slider" min="0" max="255" value="10" oninput="updateSubtractiveColor()"><br>
        <label class="magenta">Magenta: </label><input type="range" id="m-slider" min="0" max="255" value="30"
            oninput="updateSubtractiveColor()"><br>
        <label class="yellow">Yellow: </label><input type="range" id="y-slider" min="0" max="255" value="50"oninput="updateSubtractiveColor()">
      </div>
    </div>
  </div>
  <script>
    function updateAdditiveColor() {
      var r = document.getElementById("r-slider").value;
      var g = document.getElementById("g-slider").value;
      var b = document.getElementById("b-slider").value;
      var color = "RGB("+r+","+g+","+b+")" ;
      // Convert CMY to RGB
      var c = 255 - r;
      var m = 255 - g;
      var y = 255 - b;
      var display = color + " is equal to CMY("+c+","+m+","+y+")";
      document.getElementById("additive-color").style.backgroundColor = color;
      document.getElementById("additive-value").innerText = display;
    }

    function updateSubtractiveColor() {
      var c = document.getElementById("c-slider").value;
      var m = document.getElementById("m-slider").value;
      var y = document.getElementById("y-slider").value;

      // Convert CMY to RGB
      var r = 255 - c;
      var g = 255 - m;
      var b = 255 - y;
      var color = "RGB("+r+","+g+","+b+")";
      var display = "CMY("+c+","+m+","+y+") is equal to " + color;
      document.getElementById("subtractive-color").style.backgroundColor = color;
      document.getElementById("subtractive-value").innerText = display;
    }
    updateAdditiveColor();
    updateSubtractiveColor();
  </script>
</body>

</html>