Hidden color picker in Chrome dev tools

A hidden gem in the Chrome dev tools is the color picker

To activate it, open the dev tools (Ctrl+Shift+I), find any css declaration that specifies a color (e.g. color: or background-color:), and click on the little preview square:

open color picker

You can see a list of related colors from a number of pallettes including material design:

select color pallette

Finally you can determine the color of web page elements using the eye-dropper tool:

eye dropper