red and yellow

Red and yellow are primary colors found in the spectrum of visible light. Red has a long wavelength, which makes it stand out and often signals alertness or importance. Yellow has a medium wavelength, associated with brightness and energy. In art and design, these colors are vibrant and attention-grabbing, often used to evoke warmth, excitement, or caution. They are also essential in color theory, providing a foundation for creating various other hues through mixing. Both colors play vital roles in nature, culture, and communication, making them fundamental to visual perception and expression.