Flag of Mexico
Official version of the Flag of the United Mexican States or Mexico, adopted September 16th 1968 by Decree (Published August 17th 1968), Ratio 4:7. The previous version of the flag displayed a slightly different Coat of Arms. It was redesigned to be even more resplendent due to the upcoming Mexico City 1968 Olympic Games; According to Flag of Mexico, the colors are Green Pantone 3425 C and Red Pantone 186 C.  According to [1] or [2], that translates to RGB 206, 17, 38 for the red, and RGB 0, 104, 71 for the green.
Mexican Government
See File history below for details.