AgNWs were loaded to the fabric via “dip and dry” method. The process was repeated 10 times to increase amount of AgNWs loading. After the coating, the original cotton fabric changed its color from white to green due to the greenish color of the AgNWs colloidal solution. The reflectance spectra of pristine and AgNWs-loaded fabrics in the range of 400–700 nm are shown in Fig. 3. The reflectance percentage of pristine fabric reduced from about 65% to 20% due to the AgNWs loading. The CIE color coordinates (L* a* b*) and color differences (ΔE), quantitatively characterizing the observed color of the fabrics, are given in Table 1. The obtained results indicated darker color of AgNWs-loaded fabric compared with the pristine one. The L* value of pristine fabric is reduced from 84.11 to 52.33, after AgNWs loading. The AgNWs-loaded fabric showed strong increase in the yellow color component (increased value of b* from 0.03 to 5.40) and in the red color component (increased value of a* from −0.22 to 0.08), which indicated a color change from white to green. The ΔE value of 32.23 demonstrate high loading of AgNWs on cotton surface.