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You can have a look and copy the colors used in a website with just one click.
After installing the extension, clicking on the icon will allow you to extract the information on the colors used on any given website and display them as a color set list.
You can change between RGB and HEX (hexadecimal) values.
By clicking on any color, you will be able to copy its RGB or HEX to the clipboard, and you can use it by simply pasting it within an HTML or CSS code.