Enter red, green and blue color levels (0-255) and press the Convert button:
Your design tool shows a color as three separate red, green, and blue numbers, but your CSS file needs a hex code. This RGB to Hex converter handles the translation instantly. It is built for web developers writing stylesheets, graphic designers moving between different software, and anyone who needs to take an RGB color value and turn it into the six-character hex format that websites and apps expect.
Enter your three numbers, click convert, and get the hex code back. No mental math, no color chart hunting, just the exact value you need.
#FF5733. A color preview swatch shows you the result so you can confirm it matches the color you expected.RGB and hex are two ways of writing the same thing. RGB uses decimal numbers. A value like rgb(255, 87, 51) tells you there are 255 parts red, 87 parts green, and 51 parts blue. Hex says the same thing but uses base-16 notation. The number 255 becomes FF, 87 becomes 57, and 51 becomes 33, giving you #FF5733. Neither format is more correct than the other. They just show up in different places.
CSS accepts both, which is convenient. But plenty of contexts expect one or the other. A brand style guide might list colors in RGB. A website builder plugin might only accept hex. A JavaScript animation might require RGB values while your CSS custom properties use hex. The converter bridges those gaps. You pick a color once and move it between formats without recalculating anything by hand.
Each RGB channel is a number from 0 to 255 in decimal. The tool converts each decimal value into its two-digit hexadecimal equivalent using base-16 notation, where digits range from 0 to F. The three resulting pairs are concatenated into a single six-character string with a hash prefix. For example, R=10 becomes 0A, G=255 becomes FF, and B=128 becomes 80, producing the hex code #0AFF80.
Your designer sends over a brand color specification that lists the primary blue as R=70, G=130, B=180. You need to use this color in a CSS file. You enter 70, 130, and 180 into the converter. The tool returns #4682B4, which is steel blue. You copy the hex code, drop it into your stylesheet as a background color, and the result matches the designer's intent perfectly.
RGB stands for Red, Green, and Blue. It is a color model where every color is created by mixing these three primary light colors. Each channel gets a value between 0 and 255, representing the intensity of that color component.
A hex color code is a six-character string that represents a color using hexadecimal, or base-16, numbers. It starts with a hash symbol followed by three pairs of characters, with each pair corresponding to the red, green, and blue channels respectively.
This specific tool converts RGB to hex. If you need the reverse, converting a hex code back to RGB values, use the Hex to RGB Color Converter available on the site.
Each of the three RGB values must be between 0 and 255 inclusive. Zero means no intensity for that channel. Two hundred fifty-five means full intensity. Values outside this range are not valid RGB color components.
The hash symbol, also called a pound sign or number sign, is the standard prefix for hex color codes in HTML, CSS, and most design software. It tells the system that the characters following it should be interpreted as a hexadecimal color value rather than as plain text.
Standard RGB has no alpha channel for transparency. Hex codes can include an optional two-character alpha value at the end, creating an eight-character hex code. This converter handles the standard six-character hex output. If you need transparency values, you would add the alpha component separately.
