How do I convert RGB to HEX?

Convert each channel (R, G, B) from base-10 to base-16 and zero-pad to two digits. For rgb(59, 130, 246): 59→3b, 130→82, 246→f6, giving #3b82f6.

What formats does this tool accept?

You can paste rgb(59, 130, 246) with the function notation, or just type three numbers separated by commas or spaces like 59, 130, 246.

Why is the HEX output lowercase?

CSS accepts both uppercase and lowercase hex. Lowercase is the convention in most style guides and tools like Prettier and Stylelint.

Does this support RGBA (with transparency)?

This focused page only converts RGB. For full format support including alpha and OKLCH, use the full Color Converter tool.

Flowfiles ← Color Converter

RGB to HEX Converter

Convert RGB values to a HEX color code — instantly, 100% local

Type or paste RGB values (as rgb(59, 130, 246) or just three numbers) and get the lowercase HEX code ready to use in HTML, CSS, or design tools. No upload, no account, everything runs in your browser.

Need HEX ↔ RGB ↔ HSL ↔ OKLCH all at once?

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Enter RGB values to preview

RGB Input

Invalid RGB value (0–255 per channel)

HEX Output

When do you need RGB to HEX?

Design tools like Figma, Photoshop, and Sketch often export colors as RGB triplets. When you paste those values into HTML or a CSS stylesheet, you need the equivalent HEX code. HTML color attributes, some SVG attributes, and older CSS require hex notation. This tool converts in one step.

Frequently Asked Questions

What input formats are accepted?

You can type rgb(59, 130, 246), 59, 130, 246, or 59 130 246. The tool extracts the three numbers automatically.

Why is the output lowercase?

CSS is case-insensitive for hex, but lowercase is the convention recommended by Prettier, Stylelint, and most style guides. Both #3b82f6 and #3B82F6 are identical to the browser.

Can I convert RGBA (with alpha)?

This focused page converts RGB only. For full format support, use the full Color Converter.

Are values outside 0–255 accepted?

No. HEX colors only support 0–255 per channel in the sRGB gamut. Values outside this range are flagged as invalid.

Related tools

Full Color Converter HEX to RGB HEX to HSL HSL to OKLCH Color Palette Extractor