Flag of Navata, in Girona province, Spain. Diagonally divided flag from bottom hoist to top fly, the hoist part red and the fly part similarly divided into a white top and yellow bottom. On the canton a blue chessrook fimbriated yellow as high as 1/3 of the flag's height and separated from the hoist by 1/9 [of the flag's length]. Ratio 2:3. (Source: http://flagspot.net/flags/es-gi-nv.html)
This SVG flag includes elements that have been taken or adapted from this flag:
Nethunter