Yellow and red became McDonald’s standard logo color combination after the arches were first shown in gold on red.
The pairing was highly visible at roadside distance. Bright yellow made the arches easy to recognize, while red provided a strong contrasting background that could be seen on signs, buildings, packaging, and advertisements. Together, the colors became closely associated with the chain even when the arches were displayed without the full wordmark.
The colors are sometimes described as gold and red because the architectural arches were intended to look golden. In everyday branding descriptions, however, yellow and red are the standard names for the familiar palette.
McDonald’s has also used alternate treatments, including arches on white, green, or other backgrounds in particular restaurant designs and markets. Those variations do not replace the classic yellow-and-red combination as the best-known historical color identity.