This study aims to introduce a series of eco-friendly anticorrosive nano composite pigments consist of CoWO4 (CoW) as a colorant and different silica sources including CaSiO3, rice husk ash and nano silica as an inexpensive matrix. The synthesized samples were characterized by XRD, FESEM-EDX, ICP-AES, UV-Vis-NIR diffuse reflectance spectroscopy, and CIE L*a*b* color scales. The new pigments comprising about 90wt% of silica sources covered with a thin layer of CoW that is about 10 wt% of pigment. These pigments were used in epoxy based paint formulation and their corrosion efficiencies were investigated using electrochemical impedance spectroscopy (EIS) in 3.5% NaCl solution. The results showed that the color and anticorrosive properties of the nano composite pigments were significant differences with the changing of silica source. (c) 2020 Elsevier B.V. All rights reserved.