Hexadecimal color is a way to represent colors using a six-digit code, typically used in web design and digital graphics. Each code starts with a hash symbol (#) followed by six characters, which can be numbers (0-9) or letters (A-F). The first two characters represent the red component, the next two represent green, and the last two represent blue, allowing for over 16 million possible colors. For example, the hexadecimal color code #FF5733 represents a shade of orange. In this code, "FF" indicates the highest intensity of red, "57" indicates a medium intensity of green, and "33" indicates a low intensity of blue. This system is widely used in HTML, CSS, and other digital applications.