Color coordination, Red

Quick answer：

Color coordination is the practice of choosing colors that work well together in a harmonious way. Red is a primary color, often associated with passion, energy, and danger. It is known for its vibrancy and can be used to attract attention. When coordinating colors, one must consider the color wheel, which shows the relationships between colors and their complementary, contrasting, and analogous hues. Red can be paired with complementary colors like green to create a vibrant contrast, or with analogous colors like orange to create a warm, harmonious palette.