In this article I am going to show you how you can create this image color picker using JavaScript and the new EyeDropper API.
Let's start by creating the index.html
<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Image color picker</title> </head> <body> <button class="open-picker">Open Color Picker</button> <input type="file" id="img-select"> <!-- Picker color code will be shown here --> <p class="res"></p> <!-- Selected image will be shown here --> <img style="max-width: 90vw;" src="" alt="" class="preview"> <script src="main.js"></script> </body> </html> And now lets create the main.js and when user chooses an image we want to show it in our img element. We will use FileReader for that.
const imgInput = document.querySelector('#img-select') const imgPreview = document.querySelector('.preview') imgInput.addEventListener('change', function() { const file = this.files[0] // If the user doesn't select an image then don't do anything if(!file) return const reader = new FileReader() reader.addEventListener('load', function() { imgPreview.src = this.result }) reader.readAsDataURL(file) }) 
Great stuff!!! Now when the user clicks on the Open Color Picker button we want to open a color picker. For that we will use the EyeDropper API.
const imgInput = document.querySelector('#img-select') const imgPreview = document.querySelector('.preview') if(!window.EyeDropper){ alert("Your browser does not support this feature") } // Creating a new instance of EyeDropper const eyeDropper = new EyeDropper() const pickerBtn = document.querySelector('.open-picker') imgInput.addEventListener('change', function() { const file = this.files[0] if(!file) return const reader = new FileReader() reader.addEventListener('load', function() { imgPreview.src = this.result }) reader.readAsDataURL(file) }) pickerBtn.addEventListener('click', function() { // Open the color picker eyeDropper.open() }) 
And finally when the user picks a color we want to show the color code.
const imgInput = document.querySelector('#img-select') const imgPreview = document.querySelector('.preview') if(!window.EyeDropper){ alert("Your browser does not support this feature") } const eyeDropper = new EyeDropper() const pickerBtn = document.querySelector('.open-picker') const result = document.querySelector('.res') imgInput.addEventListener('change', function() { const file = this.files[0] if(!file) return const reader = new FileReader() reader.addEventListener('load', function() { imgPreview.src = this.result }) reader.readAsDataURL(file) }) pickerBtn.addEventListener('click', function() { eyeDropper.open() .then(res => { result.innerHTML = `Picked Color: <b>${res.sRGBHex}</b>` }) .catch(err => { console.log("User canceled the selection."); }) }) 
And we are done! We have successfully a image color picker using JavaScript.
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Top comments (5)
As yet, this is an experimental, non-standard feature - only available on some browsers.... it probably won't be safe to rely on it being there (or working as you expect) for quite a while.
True, thats why I mentioned new API and also added the alert
Thank you ❤
But how do I make a magnifier like in here Image Color Picker ?
You can use this Image Color Picker for pick color codes from image with any browser
Previous links doesn't work. But I found working one service with front-end solution. This Rounder image color picker have great uiux and it works fine.