The classic McDonald's Golden Arches signs prominently used yellow and red.
The yellow arches stood out as a bright architectural and graphic symbol, while red commonly appeared in the surrounding sign panels and restaurant branding. Together, the colors created a high-visibility roadside identity that could be recognized quickly by passing motorists.
Color descriptions can vary when discussing particular decades, countries, or redesigns. Modern McDonald's locations may use restrained palettes, dark backgrounds, or locally adapted signs, but the traditional yellow-and-red combination remains the best-known classic expression of the brand.
The colors also worked with the arches' shape. The bright yellow M was legible at a distance, and red provided a strong contrasting field. This was not merely decorative: McDonald's branding depended on recognition before customers could read a menu or see the restaurant interior.