RGB to HEX Converter
Convert RGB color values to a HEX code instantly, with a live swatch and color picker.
About the RGB to HEX Converter
The RGB to HEX Converter turns any RGB color into its hexadecimal equivalent the moment you enter it. Type the red, green, and blue channels as numbers from 0 to 255, paste a full rgb(79, 70, 229) string, or drag the built-in color picker, and you instantly get the matching #RRGGBB hex code. A live swatch shows exactly what the color looks like, an uppercase/lowercase toggle lets you match your project's style, and a one-click Copy button puts the code straight onto your clipboard.
RGB and HEX are two ways of writing the same color. RGB describes it with three decimal channels — red, green, and blue — each ranging from 0 to 255, which is what JavaScript, canvas APIs, image editors, and many design programs use. A hex code such as #4f46e5 packs those same three values into a compact base-16 string that is perfect for CSS, HTML, and design handoffs. Converting by hand means turning each 0–255 number into a two-digit hexadecimal pair and stitching them together; this tool does that math instantly and accurately, and it keeps the channel fields, the string field, and the picker all in sync so you never have to guess.
How to use
- Enter your RGB values in the R, G, and B boxes. Each accepts a whole number from 0 to 255; out-of-range numbers are clamped automatically.
- Or paste an rgb() string into the second field — something like
rgb(79, 70, 229). Bare79, 70, 229andrgba(...)forms work too, and this field takes priority while it has text in it. - Or use the color picker to choose a color visually; the channel fields update to match your selection.
- Read the hex code in the HEX output row, shown as a full
#RRGGBBvalue. - Toggle uppercase or lowercase with the button to match your codebase, then Copy the hex code or the tidy RGB string with the button beside each output.
The swatch and outputs update live as you type or pick, so you always see the current color. If your input isn't a valid color yet, the tool shows a short hint instead of a wrong answer or a crash, so you can keep editing until it's right.
Frequently asked questions
How do I convert RGB to HEX?
Each RGB channel — a number from 0 to 255 — is converted to a two-digit hexadecimal value, and the three pairs are joined behind a #. For example, rgb(79, 70, 229) becomes #4f46e5: 79 is 4f, 70 is 46, and 229 is e5. This converter does that for all three channels at once, so you get the finished hex code instantly without any manual base-16 math.
What range should my R, G, and B values be in?
Each channel should be a whole number from 0 to 255, where 0 means none of that color and 255 means full intensity. If you type a number outside that range or a decimal, the tool clamps and rounds it into a valid channel so the output is always a real color rather than an error.
Can I paste a full rgb() string?
Yes. The second input accepts rgb(79, 70, 229), the rgba(...) form, or even a bare 79, 70, 229. Whenever that field has text, it takes priority over the individual R/G/B boxes, making it easy to convert a value copied straight from your CSS or design tool.
Can I get an uppercase or lowercase hex code?
Both. Use the Uppercase/Lowercase toggle to switch between #4F46E5 and #4f46e5. The two are exactly the same color — casing is only a style preference — so pick whichever matches the rest of your stylesheet or design system and copy it.
What happens if I enter an invalid value?
Nothing breaks. If a field is empty or non-numeric, the swatch clears and a short hint appears showing the accepted formats. Out-of-range numbers are clamped into the 0–255 range automatically, so the tool waits for a valid color instead of throwing an error or crashing.
Is my color data sent anywhere?
No. This converter runs entirely in your browser using client-side JavaScript. Your color values are never uploaded to a server, and the tool keeps working even if you lose your internet connection after the page has loaded. Copy actions use your browser's clipboard directly, so nothing leaves your device.