Silver, charcoal, or champagne are the rarest color Labrador Retrievers. They’re rare due to their gene variations.
The black coat color on labs is determined by the dominant (B) gene, while the chocolate color is determined by the recessive (b) gene. A different set of gene variations determines the yellow color. Silver, charcoal, or champagne are the result of specific gene combinations involving the dilution gene (D) and the chocolate gene (b). These variations dilute the chocolate color to a lighter shade, resulting in a silver or charcoal appearance.
It's important to note that the rarity of a particular color doesn’t necessarily make it more desirable or valuable. However, some breeders may try to sell rare colors for more money.