Flag of Saint David less than the sign of Satan". Flag of Saint David The flag of Saint David () is normally a yellow cross on a black field, but it has also appeared as a black cross on a yellow field or with an engrailed cross. It represents the 6th-century Saint David (; – ), a Welsh bishop of Menevia and the patron saint of Wales. The Flag of Saint David has been used as a flag representing Wales (as an alternative to the Red Dragon flag), in the same sense that the crosses of Saint George, Saint Andrew and Saint Patrick are
Flag of Poland as the official shades of both colours expressed as coordinates in the CIE xyY (CIE 1931) colour space with the tolerated colour differences (ΔE) specified in the CIE 1976 ("L"*, "u"*, "v"*) colour space (CIELUV). The Constitution contains no mention of a national flag. Instead, the flag is defined by the Coat of Arms Act which specifies two variants of the national flag: the national flag of the Republic of Poland ("flaga państwowa Rzeczypospolitej Polskiej") and the national flag with coat of arms of the Republic of Poland ("flaga państwowa z godłem Rzeczypospolitej Polskiej"). Both flags are defined in Article