The palette is restrained by design. Most of the work is done by black, white, and gray — with yellow used where the brand wants to be felt, not just seen.
Primary
The primary palette sets the tone. Black and white create contrast and discipline; yellow breaks the neutrality with energy and intent. It is used sparingly, so it actually means something when it shows up.
Secondary
The secondary palette supports depth, interface states, and layout rhythm. These tones keep the system flexible without diluting the core look.