The color of copper chloride solution is typically blue. This characteristic color is due to the presence of copper ions (Cu²⁺) in the solution, which absorb light in the red region of the spectrum and reflect or transmit blue light. The intensity of the blue color can vary depending on the concentration of the solution; more concentrated solutions tend to appear darker and more vibrant. This color change is a result of the electronic transitions within the copper ions, which are influenced by the ligands surrounding them in the solution. The data supporting this observation comes from various scientific studies and textbooks that describe the color of copper chloride solutions as blue, with specific wavelengths of light absorption corresponding to the color observed.