Composition of soil color is determined by scanning with a reflecto-spectrometer in the visible range. The computation of XYZ color system is based on the data obtained as percentage of reflection at different wavelength. The x, y values given in the color coordinate of the XYZ system are again converted into standard color according to the Munsell's svstem. In order to eliminate the tedious procedures of calculation, the present writers have suggested two tables of "1-9 times XZ coefficient" and "x,y color coordination". By consulting these two tables, it is feasible to denominate the soil colors directly from their spectrometric readings both in the laboratory and in the field. Examples for the method of the denomination of soil color are illustrated in present report.