What range should my RGB values be in?

Each channel (R, G, B) must be an integer between 0 and 255 inclusive. Zero means none of that color, and 255 means full intensity.

Will the output always be 6 digits?

Yes. The tool always outputs a full 6-digit HEX code for clarity and compatibility, even when a 3-digit shorthand exists (e.g., #ff0000 rather than #f00).

Is the conversion exact or approximate?

The conversion is exact and lossless. Every possible RGB combination has a unique 6-digit HEX representation, and vice versa.

How do I handle transparency with HEX codes?

Standard 6-digit HEX codes do not include transparency. You can use an 8-digit HEX code (e.g., #3b82f680) where the last two digits represent alpha, or switch to rgba() in CSS.

Can I convert decimal RGB values?

The tool expects integer values. If you have decimal values like 59.5, round them to the nearest integer before entering.

RGB to HEX Color Converter

Convert RGB color values to HEX codes for CSS and design workflows.

#3b82f6

rgb(59, 130, 246)

The RGB to HEX Converter takes red, green, and blue color values and outputs the corresponding hexadecimal color code. While many design tools and color pickers give you RGB values, web development primarily uses HEX codes in CSS and HTML. This tool bridges that gap by converting any combination of R, G, B values (each ranging from 0 to 255) into a properly formatted HEX color code you can paste directly into your stylesheets. A live color swatch updates as you adjust the values, giving you instant visual feedback. Whether you are pulling colors from a design mockup, matching brand colors across platforms, or manually fine-tuning RGB sliders, this converter saves you from doing the math yourself.

How to RGB to HEX Color Converter

Enter RGB values

Type the red, green, and blue values (0-255) into the input fields or use the sliders to select your color.

See the HEX result

The HEX code updates in real time as you adjust the RGB values, along with a color swatch showing the exact shade.

Copy the HEX code

Click the copy button to place the HEX code on your clipboard, ready to paste into CSS, HTML, or any design tool.

Why RGB to HEX Color Converter?

Convert any RGB value to a properly formatted HEX color code instantly

Live color preview updates as you adjust R, G, B sliders or inputs

Output includes the # prefix ready for CSS and HTML use

Input validation ensures values stay within the 0-255 range

Copy the HEX code to clipboard with one click

No server communication; all processing happens in your browser

Use Cases

Converting design tool color values to CSS HEX codes for web developmentTranslating brand style guide RGB values into HEX for consistent web implementationConverting programmatically generated RGB colors into web-friendly HEX formatMatching colors between print design (CMYK/RGB) and web design (HEX)Generating HEX codes from color picker widget outputs in design applicationsDocumenting color palettes with both RGB and HEX representations

Best Practices for RGB to HEX Color Converter

Always verify each R, G, B value is between 0 and 255 before converting
Use the live color swatch to confirm the HEX output matches your intended color
Prefer 6-digit HEX codes over shorthand for consistency across your codebase
Document both RGB and HEX values in your design system for cross-platform use
When converting many colors at once, keep a reference list to avoid repeating conversions