You’ll find this in Applications > Utilities.
It’s a quick/convenient way to get colors from webpages/PDFs etc. (albeit in RGB format) without needing a browser plugin.
Tag: colour
Chrome extension: Development Favicon
This extension lets you add define URLs using a regular expression, and have Chrome (or Opera) colourise the favicon in a colour of your choice.
Ideal for reducing the chance you’ll get your dev, staging and production servers mixed up.