Colibri

If you're a Mac user and need a reliable screen color picker tool, you should consider trying out Colibri - a completely free software that's specifically designed for this purpose. With Colibri, you can easily display the RGB color value of any pixel on your screen, much like a digital color meter or colorimeter tool.

One of the best things about Colibri is that it's incredibly easy to use. You can quickly bring up the tool at any time using shortcut keys, and switch between displaying the RGB color value as a percentage, absolute, or hexadecimal. Additionally, you can save any solid color you pick as a PNG or TIFF image directly onto your desktop.

The software also comes equipped with useful menu shortcuts that allow you to quickly access important features like copy, paste, and save. This makes it even easier to use Colibri on a daily basis and incorporate it into your workflow.

Overall, if you're in need of a reliable and easy-to-use screen color picker tool for your Mac, Colibri is definitely worth considering. Its simple design and robust features make it a great choice for both casual and professional users.