RGB to HEX rules
A HEX color code stores the red, green, and blue channels as two hexadecimal digits each.
- RGB(255, 0, 0) = #FF0000
- RGB(0, 128, 0) = #008000
- RGB(255, 255, 255) = #FFFFFF
Color Converter
RGB to HEX Converter
Convert RGB values to HEX color codes for CSS variables, design tokens, style guides, and front-end debugging.
RGB Color
HEX Color Code
Color preview
#FF0000
HEX Color Code
rgb(255, 0, 0)
RGB Color
Common colors
How to use the RGB to HEX converter
1
Enter the red, green, and blue channel values from 0 to 255.
2
Read the HEX color code and preview the color immediately.
3
Copy the HEX value into CSS variables, design tokens, style guides, or front-end code.
Common color examples
RGB(0, 0, 0)
#000000
Black, with every color channel set to zero.
RGB(59, 130, 246)
#3B82F6
A blue often used in modern UI palettes.
RGB(255, 165, 0)
#FFA500
The standard named orange color in CSS.
RGB to HEX notes
- Each RGB channel must be between 0 and 255.
- HEX codes are case-insensitive, so #ff0000 and #FF0000 represent the same color.
- Alpha transparency is separate from standard 6-digit HEX and may appear as 8-digit HEX in some tools.
Helpful when RGB values need a CSS-ready HEX code
Useful for CSS variables and design handoff
Good when a color starts as RGB channels but the next code snippet, token, or style guide needs HEX.
Preview and code update together
Change any channel and see both the HEX value and color preview update immediately.
Works with standard 0 to 255 channels
Enter standard 8-bit RGB values and get the matching HEX color code.
Useful beside CSS and design tokens
Useful while checking specs, screenshots, UI code, or design notes.
Editorial and accuracy note
RGB to HEX Converter combines a working converter with practical guidance on the same page. The page is designed to show the formula, examples, rounding notes, and related tools so visitors can judge whether the result fits tasks such as CSS colors, design handoff, palettes, or accessibility contrast.
- Results are calculated in the browser with standard conversion factors for common units.
- For official forms, engineering tolerances, medical decisions, or compliance work, verify the original measurement and the relevant source rule.
- The surrounding notes focus on real use cases instead of repeating generic placeholder copy.
When this tool is useful
These examples show where RGB to HEX Converter fits real tasks instead of only returning an isolated number.
Hand off design colors
Move between HEX, RGB, HSL, or contrast results when turning mockup colors into CSS or component tokens.
Check readability
When colors are close or text is small, use the contrast result before shipping the UI.
Document reusable values
Copy the color format with its purpose, such as button, background, border, or status state.
More color converters
RGB to HEX FAQ
What RGB values can I use?
Use channel values from 0 to 255 for red, green, and blue. The HEX output is generated directly from those channels.
When would I convert RGB to HEX?
Usually when colors from design tools, screenshots, or browser styles need to be written as HEX in CSS variables, design tokens, or style guides.
Can I use this RGB to HEX converter on mobile?
Yes. The converter works well on phones, tablets, and desktop screens.
Need to convert HEX back to RGB instead?
Switch to HEX to RGB when the color you have starts as a HEX code and you need channel values.
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