Result
All calculations run locally in your browser: parsing, chart, export. Disconnect the network and the page keeps working.
Facts and limits of this method
| Each channel's range | 0 to 255 inclusive |
|---|---|
| Result format | #RRGGBB — six hexadecimal digits, uppercase letters |
| Rounding | Fractional channel values are rounded to the nearest integer |
| Out-of-range values | Values below 0 or above 255 are automatically clamped to those bounds |
When it misleads you
- Values outside the 0–255 range aren't treated as an error — they're silently clamped to the nearest bound (a negative number becomes 0, a number above 255 becomes 255) rather than rejected with a warning.
- Fractional channel values (130.7, for example) are rounded to the nearest integer before conversion to hex — a HEX code always describes exactly 256 shades per channel, there are no fractional shades in this system.
- The result doesn't include an alpha (transparency) channel — for that you need the separate converter that works with RGBA.
- The resulting HEX code is just another way of writing the same three numbers, not a different color space — it carries no color-profile information (sRGB, Display P3 and so on).
How it is calculated
Each of the three values (red, green, blue) is rounded to the nearest integer and clamped to the 0–255 range.
Each clamped value is converted to a two-digit hexadecimal number: for example, 59 in decimal is "3b" in hexadecimal.
The three resulting character pairs are joined in order with a leading "#" — producing a full HEX code like #3B82F6.
The swatch is filled directly with that same HEX code via CSS, so it visually matches the result.
Questions and answers
What happens if I enter a number above 255?
It's automatically clamped to 255 — no error, the channel just becomes maximally bright.
Can I enter fractional channel values?
Yes, but they're rounded to the nearest integer before conversion to HEX — the final color is always described by whole numbers from 0 to 255.
Does the result account for transparency?
No, this converter only handles opaque colors. For an alpha channel, use the separate RGBA to HEX converter.
Is my data sent anywhere?
No, the whole calculation runs in your browser.