RGB to HEX Converter
Turn rgb(59, 130, 246) into #3B82F6 in one step, with a live preview. HEX is what design handoffs, brand guidelines and most CSS codebases expect.
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rgb(37, 99, 235)
hsl(221, 83%, 53%)
Popular color conversions
About RGB to HEX Converter
RGB to HEX conversion maps each 0–255 channel into a two-digit hexadecimal pair, producing a compact #RRGGBB code used across CSS, design systems, and brand guidelines.
Adjust the R, G, and B inputs (0–255) or pick a color. The HEX field updates immediately so you can copy a ready-to-paste CSS color.
rgb(37, 99, 235) → #2563EB
Values are clamped to 0–255. For design tokens, prefer lowercase HEX unless your style guide requires uppercase.
Need all formats at once? Open the full Color Converter, or read the HEX to RGB CSS guide.
Frequently Asked Questions
Why store colors as HEX instead of just keeping RGB?
HEX is shorter to write in CSS variables and design tokens (#2563EB vs rgb(37, 99, 235)), and it's the format most design tools, brand guidelines, and version-control-friendly style sheets expect.
What happens if I enter an RGB value above 255 or below 0?
Each channel is clamped to the valid 0–255 range before converting, so out-of-range input (e.g. from a color-math calculation) won't produce an invalid HEX code.
Does RGB to HEX ever lose precision?
No. Whole-number RGB channels (0–255) convert to HEX with zero rounding error — each direction is a straightforward base-10-to-base-16 mapping.
Are my color values uploaded to a server?
No. The conversion is plain arithmetic that runs locally in your browser; nothing is sent anywhere.