C-MEASURE is application to measure a simple color. It display the color of an arbitrary place of the photograph in XYZ, L*a*b*. In addition, It can measure distance on the L*a*b* color space of two colors. The conversion parameter to the chromaticity value performs the adjustment that It matched with the characteristic of the camera of iPhone4 from photograph data, but the calibration that It accept photography environment, and used the color checkers is possible.