With the magic of HTML5 you can get colors from any image with this simple online tool. To use this new color tool it’s recommended that you upgrade your web browser to the latest version.
(For the full HTML5 support).
Step 1: Select image from your computer and click “Show image” button. Scaled version of the image will show up.
Step 2: Click anywhere on the image to choose an area. 9×9 pixels will be magnified in a small box.
Step 3: Click anywhere in the small box to select desired color.
Step 4: Click again on the image to choose another 9×9 pixels area.
Source: Get Colors from Image