I think it was blue and yellow.
The colors of the double crown were white and red.
Double Crown Resources.....symbol is DDCC.
Pharaohs wore the royal Deshret (Red Crown), Hedjet (White Crown), Peshent (Red and White Crown), Khepresh (Blue Crown) and Nemes (Head-Cloth Crown). The queens wore Cap-Crown or other fancy headdresses).
The double crown is the crown that ancient Egyptian Pharaohs wore after lower (Northern) and upper (Southern) Egypt were united under one ruler.
The significance is that his crown symbolized the kingdom's unity ( Upper and Lower Egypt), he wore a double crown: the helmet-like white crown represented Upper Egypt, and the open red crown represented Lower Egypt.
they wore the double crown to symbolize their rule over Upper and Lower Egypt.
The double crown represented the unification of the two regions of Egypt, upper and lower Egypt.
The significance is that his crown symbolized the kingdom's unity ( Upper and Lower Egypt), he wore a double crown: the helmet-like white crown represented Upper Egypt, and the open red crown represented Lower Egypt.
they wore the double crown to symbolize their rule over Upper and Lower Egypt.
2 crowns
The "double crown" (sxmty in hieroglyphs)was simply the two crowns of Upper and Lower Egypt combined into one. These were much more ancient crowns, one red (dSrt) and the other white (HDt) which were worn in pre-Dynastic times by the rulers of Upper and Lower Egypt.The reason for the original choice of these colours is likely to be religious, but it is not known today.
they wore the double crown to symbolize their rule over Upper and Lower Egypt.