The Hong Kong flag has 2 primary colors, which are red and white.
The table below has the common and popular codes of these colors in HEX, RGB and CMYK formats along with Pantone (PMS), RAL and NCS (Natural Color System). Please note that HEX and RGB codes are to be used for digital works and web pages (including HTML and CSS) while the CMYK values are for printers.
The Hong Kong flag has a white Bauhinia × blakeana flower in the center on a red field. The red color is the same as the one used on the flag of the People's Republic of China. Bauhinia × blakeana or the Hong Kong orchid tree is a hybrid tree with orchid like flowers and heart shaped two-lobed leaves. Though the plant originated in Hong Kong, it has spread to other parts of the world.
The two colors in the Hong Kong flag have special significance and meaning especially in the light of the transfer of sovereignty from Britain to China. The red stands for the motherland and is exactly the same color used in the flag of China. The white Bauhinia flower symbolise Hong Kong as a separate though inalienable part of China.