Chicks can hatch blue, black (gold), or splash. This particular chick appears to be splash based.
Blue Partridge Brahma Day Old Chicks
Brahma- Black/Blue/Splash Partridge Chick (hatch date 04/27/21
Blue, Splash, Gold Partridge Brahma-6 Pack
Brahma chicken hatcheries and breeders — The Featherbrain
Blue Partridge Brahma Day Old Chicks
Partridge Brahma (Gold)
Gallery 1 — Lockwood Feather Farm
New Brahma Group: Blue Partridge x Partridge, Plus Dark
Brahma- Black/Blue/Splash Partridge Chick (hatch date 04/27/21) – Papa's Poultry