Image Color Picker (RGB/HSV) / Tool

Eyedropper tool to extract colors from selected areas of an image in RGB and HSV.
or Drop image file
or Paste image (Ctrl + v)
hsv(0°, 0%, 100%)
Records the color clicked.

How to use this tool

  1. Select an image: Please specify an image file using the Select File button or drag & drop, or set an image by pasting from the clipboard.
    • If the image is larger than 1920 x 1080, it will be scaled down.
    • Images are loaded only within the browser. They are not sent externally.
  2. Specify where to get color: Place the cursor on the loaded image. The color of the cursor point is acquired and displayed.
  3. Save color: Click to temporarily save the color.
    • Saved colors disappear when the browser is closed or the page is reloaded; they are not saved in cookies, etc.

Related Tools: Color Converter (RGB, HEX, HSV, HSL) / Tool


It represents colors by mixing red, green, and blue, called the three primary colors of light. A string of RGB values expressed in hexadecimal is sometimes called a color code or web color.


It expresses color in terms of three elements: Hue (color type), Saturation (vividness), and Value (brightness). These expressions are easy for humans to understand.


MS Paint can also acquire RGB, etc., but the procedure is a bit cumbersome.

  1. Open image in MS Paint
  2. Select “Select Color”
  3. Click on the pixel for which you want to get a color
  4. Open “Edit Color”
  5. Decimal RGB and HSV values will appear.
  6. If you want hexadecimal color codes, convert them separately.

It was too much trouble, so I made a tool. I had a hard time pasting from clipboard to canvas.

This site is Gatsby.js (React), so I implemented it as follows. If there is a better way, I would like to know.

componentDidMount() {
  document.addEventListener("paste", this.onPaste, false);

onPaste(e) {
  var data = e.clipboardData;
  if (!data
    || !data.types
    || data.types.length !== 1
    || data.types[0] !== 'Files') {
      return true;

  var file = data.items[0].getAsFile();
  var img = new Image();
  img.onload = function() {
    var cvs = document.getElementById('my_canvas');
    var ctx = cvs.getContext('2d');
    // Clear canvas
    ctx.clearRect(0, 0, cvs.width, cvs.height);

    if (cvs.width < img.width || cvs.height < img.height) {
      // If the size exceeds the size of the canvas, maintain the aspect ratio and reduce the size
      var scale = Math.min(cvs.width / img.width, cvs.height / img.height);
      ctx.drawImage(img, 0, 0, img.width * scale, img.height * scale);
    } else {
      ctx.drawImage(img, 0, 0);
  img.src = window.URL.createObjectURL(file);