This hue is inspired by the yellow of caution tape, a color standardized in ANSI and OSHA safety guidelines for maximum visibility. Its shade contrasts sharply with black lettering, ensuring warnings remain legible even in poor light or at a distance. Widely adopted on construction and hazardous sites in the 1960s, the color leverages human visual sensitivity to yellow-green wavelengths, making it one of the most attention-grabbing signals in our spectrum.