Which color among the Britannia Petite varieties indicates a bluish tone?

The color that indicates a bluish tone among the Britannia Petite varieties is indeed the black otter. This color variation is characterized by a dark, almost black body with lighter undercoating, which can give it a subtle blue tint in certain lighting. The bluish hue is perceived due to the way light interacts with the dark fur combined with the underlying coloration.

In contrast, the other colors listed do not exhibit this bluish characteristic; for example, chestnut agouti has a rich, warm brown appearance, blue eyed white features a completely white coat with distinctive blue eyes but lacks any bluish fur tone, and ruby eyed white exhibits a bright white coat complemented by red eyes, also devoid of any bluish tinge. Understanding these color characteristics helps in better identifying breed and variety standards in rabbit showmanship.