HEX to RGB Converter

A HEX color is three base-16 numbers wearing a # prefix. Base-16 uses the digits 0-9 plus a-f, and two of those digits cover exactly 0 to 255, the same range as an RGB channel. The first pair is red, the second green, the third blue. To convert a pair by hand, multiply the first digit's value by 16 and add the second: d3 is 13 × 16 + 3 = 211.

Going the other way, divide the channel by 16: the quotient is the first digit and the remainder is the second, so 52 becomes 3 and 4, written 34. Because the two systems map one-to-one, no precision is lost in either direction. That is why this converter is exact rather than approximate, and why you can round-trip a color between formats as many times as you like.

HEX is the compact form you will meet in stylesheets, design tools, and brand guidelines; it is short, unambiguous, and easy to paste around. rgb() spells out the channels, which is clearer to read in code review and is the form canvas drawing, image processing, and most graphics APIs actually consume. When you need transparency, rgba() and eight-digit HEX carry the same information, so pick whichever your codebase already uses and stay consistent.