ColorPicker is described as 'Uses the camera or a photo of your iOS device to tell you the color you are pointing at. The free version of this app tells the RGB code only. You can upgrade to full version by InApp-purchase and access further color palettes including RAL and W3C color names, store' and is a Color Picker tool in the photos & graphics category. There are more than 50 alternatives to ColorPicker for a variety of platforms, including Windows, Mac, Web-based, iPhone and Linux apps. The best ColorPicker alternative is gpick, which is both free and Open Source. Other great apps like ColorPicker are Just Color Picker, Instant Eyedropper, Sip and Pixie.