RGB to HEX Converter

Enter red, green and blue values (0–255) — or paste rgb(194, 66, 66), rgba(0, 59, 68, 1) or 32, 7, 1 — and get the hex color code.

R
G
B
A

Paste rgb(), rgba(), hsl() or “R, G, B” here.

How to convert RGB to HEX

Each RGB channel is a number from 0 to 255. In hex, the same number is written with two base-16 digits (00–FF). Convert each channel, then join them after a #.

  1. Divide the channel by 16. The whole-number result is the first hex digit.
  2. Take the remainder. That is the second hex digit. Values 10–15 become A–F.
  3. Repeat for green and blue, then concatenate: #RRGGBB.

Example: rgb(194, 66, 66)

  • 194 ÷ 16 = 12 remainder 2 → C2
  • 66 ÷ 16 = 4 remainder 2 → 42
  • 66 ÷ 16 = 4 remainder 2 → 42

Result: #C24242. Small values need a leading zero — rgb(32, 7, 1) is #200701.

HEX = "#" + toHex(R) + toHex(G) + toHex(B),   toHex(n) = digit(n ÷ 16) + digit(n mod 16)

RGBA to 8-digit HEX

To keep transparency, multiply alpha (0–1) by 255, round it, and append it as a fourth pair. rgba(108, 92, 231, 0.4) → 0.4 × 255 = 102 = 66 → #6C5CE766. With alpha 1 the extra pair is FF and can be dropped: rgba(0, 59, 68, 1) = #003B44. The RGBA guide has a full alpha-to-hex table.

Examples

RGBHEX
rgb(255, 255, 255)#FFFFFFwhite
rgb(0, 0, 0)#000000black
rgb(255, 0, 0)#FF0000red
rgb(255, 87, 51)#FF5733orange-red
rgb(194, 66, 66)#C24242brick red
rgb(32, 7, 1)#200701near-black brown
rgb(0, 59, 68)#003B44deep teal
rgb(0, 0, 247)#0000F7blue
rgb(0, 0, 136)#000088navy-like blue
rgb(108, 92, 231)#6C5CE7violet
rgb(128, 128, 128)#808080gray

In code

// JavaScript
const rgbToHex = (r, g, b) =>
  '#' + [r, g, b].map(v => v.toString(16).padStart(2, '0')).join('').toUpperCase();
rgbToHex(194, 66, 66); // "#C24242"

# Python
def rgb_to_hex(r, g, b):
    return f"#{r:02X}{g:02X}{b:02X}"

Frequently asked questions

How do I convert RGB to HEX?

Convert each channel (0–255) to a two-digit hexadecimal number and join them after a #. Divide the value by 16: the whole-number result is the first digit and the remainder is the second (10–15 become A–F). rgb(194, 66, 66) gives C2, 42, 42, so the hex code is #C24242.

How do I convert rgba() to hex?

Convert R, G and B as usual, then multiply alpha by 255, round, and convert that to two hex digits. rgba(108, 92, 231, 0.4) → alpha 0.4 × 255 = 102 = 66, giving the 8-digit hex #6C5CE766. If alpha is 1, you can drop it: rgba(0, 59, 68, 1) is simply #003B44.

Why does single-digit RGB need a leading zero in hex?

Every channel must be exactly two hex digits. Values 0–15 convert to a single digit (0–F), so they need a leading zero: rgb(32, 7, 1) is #200701, not #2071.

Is RGB to HEX conversion exact?

Yes. Both formats store 8 bits per channel, so every rgb() value has exactly one 6-digit hex code and converting back gives the same numbers. Only alpha can lose a little precision, because 8-digit hex stores it in 256 steps.

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