ansi-colors is a popular JavaScript library for adding color and styles to terminal output. It offers a wide range of ANSI escape codes for foreground and background colors, along with text styles like bold, italic, and underline. Designed for ease of use and broad compatibility, ansi-colors enhances console logging for improved readability and debugging. It supports various terminal environments and seamlessly integrates into projects, providing a simple yet effective way to make console output visually appealing and informative.