Matchcolor provides a complete software with 6 modules. As far as presented very complete, It is mainly dedicated to big factory which have a color laboratory with colorist using it all day long. The 6 modules are 1, Color quality control with different indexes wi, Yi, Opacity, Color strength and graphics. 2, Approach search which allows to classify all colors in a file spectral or formulas files from a standard. 3, Colorant characterization this module uses a spectral file of all colorants letdowns some mixtures with white and one with black and measurements made in general with quality control module . It allows calculating and displaying the fitting curves of k light absorption and s light diffusion versus concentration. It allows building up what we call a colorant file. 4, Formulation by combination this formulation module combines all the colorant of a colorant file to calculate thousands of formula and display the best price or, Regarding de metamerism. 5, Manual/automatic formulation with the user, This module selects manually the colorants he wants to employ within the formula. Then formulation can be calculated automatically by curve fitting or by color coordinate. This mode can prove to be highly beneficial in a research laboratory to do simulations6, Correction module 2 correction modes are available, Correction by reformulation. The software calculates a new formula which give the correction to align with the standard, Correction by adding. The software calculates the minimum quantity of each colorant it’s essential to add in a given basic quantity. This mode is also used to recycle work off products. Matchcolor can support various models of spectrophotometer.