What Is a Color Picker?
A color picker (also called an eyedropper tool) lets you click anywhere on an image to read the exact color at that pixel — as HEX, RGB, or HSL. It's a staple for designers matching a brand color from a logo, developers pulling a color for CSS, or anyone who just needs to know exactly what shade something is. Under the hood, it reads the raw pixel data from the image file directly using the Canvas API, so the value you get is the color as it's actually stored in the file — not an approximation based on how your particular screen happens to render it.