Are silver Labradors purebred?

The status of silver Labradors as purebred dogs is debated. A limited number have been registered as purebred Labradors with the American Kennel Club (AKC), under the chocolate category, since silver is a dilute shade of chocolate.
The controversy stems from their unusual
silver coat color , which many believe comes from their
Weimaraner roots several generations back. Some Labrador breeders and
clubs argue that the silver coat is a genetic dilution not naturally found in the traditional Lab lines.
So, while silver Labs can be registered and technically purebred by AKC standards, their genetic history may not be as clear-cut as yellow, black, or chocolate Labs — and that’s what fuels the ongoing debate.