What is the rarest Golden Retriever color?

What is the rarest Golden Retriever color?
The rarest coat color for a Golden Retriever is a deep red or mahogany. While the breed standard allows for a range of dark golden, the deepest red or mahogany coloration is less common and often considered a rarer variation. Rare Golden Retrievers colors (such as pure white, platinum, and red) are often alternative names for breed standard colors such as cream and dark golden.