How to use the RGB to HEX Converter
- Type the RGB value into the RGB box:
rgb(255, 99, 71),255, 99, 71or255 99 71all work. - Read the HEX code in the box above, and click Copy.
- Check the swatch and the contrast with black and white text below.
How RGB to HEX works
Convert each of red, green and blue (0–255) to a two-digit hexadecimal number, then join them after a #. Divide by 16: the whole part is the first digit and the remainder is the second, using A–F for 10–15.
rgb(255, 99, 71) → 255 = FF, 99 = 6 × 16 + 3 = 63, 71 = 4 × 16 + 7 = 47 → #FF6347 (tomato).
Values below 16 need a leading zero: 10 becomes 0A, so rgb(10, 10, 10) is #0A0A0A.
Common colors
| Color | HEX | RGB |
|---|---|---|
| Black | #000000 | rgb(0, 0, 0) |
| White | #FFFFFF | rgb(255, 255, 255) |
| Red | #FF0000 | rgb(255, 0, 0) |
| Lime | #00FF00 | rgb(0, 255, 0) |
| Blue | #0000FF | rgb(0, 0, 255) |
| Yellow | #FFFF00 | rgb(255, 255, 0) |
| Cyan | #00FFFF | rgb(0, 255, 255) |
| Magenta | #FF00FF | rgb(255, 0, 255) |
| Gray | #808080 | rgb(128, 128, 128) |
| Orange | #FFA500 | rgb(255, 165, 0) |
| Purple | #800080 | rgb(128, 0, 128) |
| Navy | #000080 | rgb(0, 0, 128) |
| Teal | #008080 | rgb(0, 128, 128) |
| Tomato | #FF6347 | rgb(255, 99, 71) |
| Gold | #FFD700 | rgb(255, 215, 0) |
| Hot pink | #FF69B4 | rgb(255, 105, 180) |
Frequently asked questions
What is rgb(0, 0, 0) in HEX?
#000000, black.
Can I convert RGBA with transparency?
The alpha becomes a fourth pair in 8-digit HEX: 50% is about 80, so rgba(255, 99, 71, 0.5) is #FF634780.