What does this tool do?
| Direct answer | RGBA to Hex converts channels to hex and multiplies the 0-1 alpha by 255. |
| Key fact | Alpha 0.5 × 255 = 127.5 ≈ 0x80 — hex alpha is always an integer byte. |
| Processing | Runs locally in your browser; no data is sent to a server. |
How to use
- Type rgba values like rgba(255, 99, 71, 0.5).
- Click Convert.
- See the hex code.
Example
Input
rgba(255, 99, 71, 0.5)
Output
#ff634780
Who is this for?
This tool was built for people who need a fast answer in the browser — no install, no account, no data leaving the device.
Programmers working with low-level data, computer science students, and electronics hobbyists reading registers — anyone tired of converting number bases by hand.
Frequently asked questions
Can I omit alpha?
Yes — rgb() input yields a 6-digit hex.
Why 8 digits?
The last two encode transparency: 00 invisible, FF opaque.
Where is 8-digit hex supported?
All modern browsers and CSS Color 4.