HexColorPicker is described as 'plugin bundle for the Apple Color Picker' and is an app in the photos & graphics category. There are more than 25 alternatives to HexColorPicker for a variety of platforms, including Windows, Mac, Linux, Online / Web-based and iPhone. The best alternative is gpick, which is both free and Open Source. Other great apps like HexColorPicker are Instant Eyedropper, ColorZilla, Pixie and System Color Picker.
Instant Eyedropper is a free color detection tool for webmasters that will identify and automatically paste to the clipboard the HTML color code of any pixel on the screen with just a single mouse click.
Small utility that can show you coordinates and color of any pixel on your screen in different formats (HEX, HTML, RGB, CMYK, HSV). It's staying on top, displays a color of that pixel under mouse cursor, the program can magnify that zone w/ hotkey.
Pixel Pick is a free color picker tool that pick the pixels color under your mouse cursor on the desktop and translates it into a number of different color formats such as RGB, CMYK, HSB, HEX or Web Color format. A free color picker for grabbing color under your mouse .
ColorMania is a colorpicker for Windows. It's the perfect solution for previewing, identifying, testing and organizing color values. It can be a very difficult job to get your colors right for a unique or appealing design.
With the pipette you are able to edit, convert and pick up colors from your screen. Pipette also supports a lot of standards or color models (RGB, CMY, CMYK, HSV, TColor and XYZ0). Color models are nothing but theoretical descriptions of colors using certain numeric values.