When blue and yellow are mixed together, they produce green. This combination is an example of color mixing in the subtractive color model, commonly used in art and design. In this model, pigments absorb (subtract) certain wavelengths of light and reflect others, combining to create new colors. Blue and yellow are both primary colors in this mixing system. When combined, their wavelengths interact to create the unique hue of green. The exact shade of green can vary depending on the specific tones of blue and yellow used, producing a spectrum from lighter to darker greens.