Hexadecimal color codes are the most common format for specifying colors in HTML and CSS. A hex color like #1A73E8 represents red (1A), green (73), and blue (E8) components as two hex digits each, ranging from 00 (0) to FF (255). Shorthand hex codes like #F0F expand to #FF00FF. Our color picker lets you visually choose any color on the spectrum, then instantly shows you its HEX, RGB, HSL, and HSV equivalents — making it easy to find the perfect shade and copy it directly into your CSS.