Red and yellow became central to McDonald's restaurant branding through its Golden Arches.
The bright yellow arches provided the strongest visual cue, while red became a prominent companion color in signs, packaging, interiors, and advertising. Together, the colors created a high-visibility identity suited to roadside restaurants and busy commercial areas.
The pairing is often discussed as if it came from a single logo decision, but McDonald's branding developed across architecture, signage, uniforms, packaging, and promotional materials. The arches themselves are yellow; red commonly functions as the supporting field or accent.
McDonald's has updated restaurant design and visual systems repeatedly, so individual locations can look more restrained or modern than older restaurants. Even so, the red-and-yellow combination remains strongly associated with the classic brand and helps distinguish it from competitors.