Mixing blue and yellow creates the color green. This combination occurs because blue is a cool color and yellow is a warm color, and when blended, they produce a balanced hue. This mixing can be observed in art, design, and various fields that utilize color theory. Different shades of green can be achieved by varying the proportions of blue and yellow, making it a versatile color. Green is often associated with nature, growth, and tranquility, reflecting its prominence in the natural world.