The Final Work "Trichromia in the process of dyeing the polyamide knitting" is divided into three parts: theoretical part, experimental part and results and discussion. The theoretical part describes color as a psychophysical sensation induced by light and its objective evaluation by the principles of CIEL * a * b * system. The tricrhomatic process and the choice of polyamide dyes are also described, since dyeing agent used in the work is a polyamide knit. Among the color dyes acidic dyes were more accurately described because the desired coloring was obtained by their mixing in the tricrhomatic process. In the experimental part, the textile material characterization was made to obtain confirmation that it was polyamide fibers and found out which polyamide it is exactly. Systematization for work in laboratory conditions was made according to the recipes from the Jadran tvornica čarapa d.d.. Dyeing of polyamide samples was carried out by the tricrhomatic process, so it was necessary to make a scheme for adding and mixing three acid dyes to obtain 36 dyed samples in different tones. A photography of dyed samples, spectrophotometrically measured color parameters of the obtained colors and a graphic representation of tones, saturation and brightness in the CIEL * a * b * coordinate system are attached as a result of the discussion of this Final Work.