gelb

Gelb is a color of the visible spectrum with light wavelengths roughly between 570 and 590 nanometers. In color theory, yellow can be produced by mixing red and green light in additive systems, or by using yellow pigments in subtractive systems. In painting, yellow is often treated as a primary color in the traditional RYB model, while in printing and digital media it is part of the cyan–magenta–yellow or red–green–blue spectrum depending on the model used.

In nature, yellow appears widely in flowers, fruits, and animal markings. Common examples include sunflowers, dandelions, lemons, and bananas. Yellow pigments and signals also play roles in pollen visibility, warning coloration, and the visibility of ripe produce.

Culturally and practically, yellow is associated with warmth, brightness, and optimism, but it can also signify caution or hazard in many contexts. It is frequently used in road signs, construction gear, and warning labels to attract attention. In some cultures, yellow carries additional symbolic meanings related to royalty, earth, or tradition.

Pigments and production have historically varied: yellow ochre and Naples yellow are traditional pigments, while modern cadmium yellow and other synthetic yellows are common today. Some historical yellows used lead compounds and are recognized as toxic. Contemporary yellow pigments emphasize stability and safety for widespread use.

In German, gelb is the word for yellow; as a noun it is often capitalized in writing as das Gelb, reflecting its status as a distinct color term.