Act 33/1981, dated 5 October, on the Coat of Arms of Spain (Official Gazette nº 250, dated 19 October) Royal Decree 2964/1981, dated 18 December, approving the official Coat of Arms of Spain design (Official Gazette nº 303, dated 19 December) Royal Decree 2267/1982, dated 3 September, technically specifying the colours of the Arms of Spain (Official Gazette nº 221, dated 15 September) Official design criticism The official design of the coat of arms of Spain is like a logotype set in linear style: drawing, proportions of elements and colours (CIELAB). This approach has been criticised by Spanish heraldists Faustino Menéndez Pidal y Navascués, Hugo O'Donnell y Duque de Estrada, and Begoña Lolo for three reasons. First, the coat of arms pattern is simplified, compared to the usual heraldic usages, which relevantly considers the way of representing the charges and tinctures, because they must be easily identifiable, without error; however, the colours determined by the decree are difficult to distinguish. In particular, the Or and the Gules have been respectively represented so intensely and so darkly that they do not allow for clear distinction of the charges. The colour chosen to represent Purpure has been criticised for being a pinkish hue, unlike the traditional hues of the Kingdom of León and heraldic custom. Second, the style of the official design does not fit into traditional Iberian heraldic norms. The Escutcheon shape is midway between the modern French style, rectangular with a slightly convex bottom edge, and the Spanish style, with an almost semicircular bottom edge. The Enté en point of the arms of Granada also is represented in the French tradition, with slightly convex top edges, instead of the sharp curved-top edges of Iberian heraldry. Third, the inescutcheon, superimposed on the main shield, is elliptical rather than the usual escutcheon shape, which is considered imprecise. Historical Spanish coats of arms The Arms of the Kingdom of Spain was the official coat of arms of the Monarch of Spain from the time of the Catholic Monarchs, and was used as the official arms of the Kingdom until the First Spanish Republic in 1873. Afterwards, the arms became an integral part of the Coat of Arms of Spain. The different governments since (whether republican or monarchist) have led to the arms being changed on various occasions, but always respecting the main heraldic design involving the former kingdoms and, in many cases, the