ColorCatcher turns a smartphone into a color-capturing device. It consists of two parts: the ColorCatcher smartphone app and the credit-card-sized ColorChart. The user places the ColorChart on the color sample to be captured and launches the ColorCatcher app. The smartphone camera detects the ColorChart automatically, and the app generates color data. The captured color will be transformed into precise Lab and sRGB color values, and the matching color of the RAL Classic color book will be displayed.