Flag of Italy the Italian tricolour flag." As the arms, blazoned "gules a cross argent", mixed with the white of the flag, it was "fimbriated azure", blue being the dynastic colour, although this does not conform to the heraldic rule of tincture. The rectangular civil and state variants were adopted in 1851. In the same year, the Grand Duchy of Tuscany became constitutional and dropped the Austrian flag, with Austria–Lorraine great coat of arms, in favour of the defaced Italian tricolour with simplified arms. It is worthy of note, however, that the arms bear the red-white-red flag of Austria, the opponent of Italian
Flag of Switzerland as the cross arms, so that the total height of the cross is fixed at 20:32 = 5:8 of the height of the flag (in other words, the width of the margin is 6:32 = 3:16). This ratio is also given as a "vexillological recommendation" in the flag regulation used by the Swiss Armed Forces. Flags with a cross of larger relative widths than the prescribed 20:32 = 62.5% remain in wide use; common ratios include 20:26 ≈ 76.9% and 20:28 ≈ 71.4%. For the ensign, the ratio of the size of the cross to the height is likewise 5:8,