Copper in the CMYK color model has the values (10, 50, 90, 10) which means it has 90 of yellow, 50 of magenta, 10 of cyan and 10 of black. The closest hex code of the color is #CD8232 with RGB equivalent values (205, 130, 50). The CMYK system is the backbone of the color printing technology found in both large industrial and small desktop printers. Colors are created using only four inks - cyan (C), magenta (M), yellow (Y) and black (K).
Please understand that the hex code of the copper CMYK mentioned on this page is only an approximation. Hexadecimal and RGB color values are for screen and digital media while the CMYK model is used for printing and, therefore, the conversion of one to another is not perfect.