This hue is inspired by the distinctive yellow of American school buses, officially standardized in 1939 as National School Bus Glossy Yellow (Color 13432 in the NIST system). Chosen for its exceptional visibility in both bright sun and overcast light—and for how well it registers in peripheral vision—the color became a nationwide requirement to ensure uniform recognition and safety. For more than 80 years, this unmistakable yellow has signaled childhood, community, and the daily rhythm of education.