We haven't done a resource share in a while (we really should do more of these), but we wanted to pass along this nifty little site / web app. With all the craziness over the rise of flat design, you may be looking for a quick place to grab some of the common, popular colors that have been making waves during the rise of this visual language.
Flat UI Colors is a small, extremely east to use web application that allows you to select and copy the primary flat colors for use in your design. What we really like about it is besides being able to copy a standard hex number, you can also copy RGB and RGBA values as well. This makes it a handy tool to quickly grab a needed value and drop it in any application you might need it in.
This useful little app is courtesy of designer / developer Ahmet Sulek from Istanbul.