Extract colors easily from webpages with color picker tool
Getcolor allows you to retrieve the color of any pixel on any website easily: just move the eyedropper tool into any place and GetColor will show you the color value.
The color value is displayed in 3 main forms: RGB, HEX, HTML.
GetColor will be always on hand - you can pin the extension button to the browser toolbar.
Also, you can use the Alt-P shortcut.
If you want to know what color is prevalent on the page - use the Dominant color feature.