Matching tones in color coordination involves understanding the color wheel and the relationships between different colors. Colors can be categorized into primary (red, blue, yellow), secondary (green, orange, purple), and tertiary colors. To match tones, consider complementary colors, analogous colors, and triadic color schemes. Complementary colors are opposite each other on the color wheel and create high contrast. Analogous colors are next to each other and create a harmonious look. A triadic scheme uses three colors evenly spaced around the color wheel. It's also important to consider the context and the emotions you want to convey.