Colour
Convert a hex colour to RGB
Paste a hex colour to get its RGB values. The 4 and 8-digit forms carrying alpha are handled too, which most converters quietly drop.
#ff8800
HEX
255, 136, 0
RGB
32, 100%, 50%
HSL
Preview
Contrast
- Against white2.39:1Fails
- Against black8.77:1AAA
WCAG asks for 4.5:1 for body text and 3:1 for large text. The ratio is computed from relative luminance, which is not the same as how bright a colour looks.
- Runs in your browser
- No account required
- Free to use
How it works
Four lengths are valid, not two
#RGB and #RRGGBB are the familiar ones. #RGBA and #RRGGBBAA add alpha, and a converter that only knows the first two silently turns a semi-transparent colour opaque — which is a real bug in a design system, not a rounding difference.
The short form doubles each digit
#f80 is #ff8800, not #f08000. Each digit is repeated rather than padded, which is why #fff is white and not a very dark grey.
What it does
All four hex lengths
3, 4, 6 and 8 digits, with or without the leading hash.
Alpha preserved
Reported as a 0-to-1 value and included in the rgba() output when it is less than fully opaque.
Contrast alongside
Since the colour is parsed anyway, the readability against white and black is shown too.
Runs in your browser
No account and no upload — what you type is never sent anywhere. Analytics records that the tool was opened, never what you put into it.
Practical advice
Getting a better result
- CSS accepts hex with alpha directly, so #ff880080 works in a stylesheet without converting to rgba() at all.
- If a colour looks wrong after conversion, check whether the original had 4 or 8 digits — the last pair is transparency, not blue.
Questions
Things people ask
What does the 8-digit hex form mean?
The last two digits are alpha, from 00 fully transparent to ff fully opaque. #ff000080 is red at about 50% opacity.
Is #fff the same as #ffffff?
Yes. The short form doubles each digit, so #fff expands to #ffffff.
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Open toolWho builds these
Free tools by day. Websites that earn their keep by trade.
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