National flag
Colours

The most common colours in national flags are red, white, green, dark blue, yellow, light blue, and black. The only national flag not to include the colors red, white, or blue is Jamaica's. The occurrence of each colour in all the flags is listed in detail in the table below. The table shows that the colours light brown, dark brown and grey are only present in very small quantities. To be more precise these colours are currently only present in some of the symbols found within a few flags, such as in the case of the Spanish flag.
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