Hex #FFFFFF to RGBA at 25% Opacity

#FFFFFF with 0.25 alpha converts to rgba(255, 255, 255, 0.25), often used for frosted-glass UI overlays.

Embed this tool on your site

<iframe src="https://abracalc.com/converter/hex-to-rgba/ffffff-quarter-transparent-rgba/embed.html" width="340" height="320" style="border:1px solid #e4e7ec;border-radius:12px" loading="lazy"></iframe>

How to use this tool

Enter your hex color code (e.g. #3a86ff or #f0f).
Set the alpha value between 0 (invisible) and 1 (opaque).
Copy the rgba() result into your CSS.

A nearly transparent white — rgba(255, 255, 255, 0.25) — is perfect for frosted-glass card effects in modern UI design.

Frequently asked questions

What is RGBA?: RGBA is like RGB but with a fourth channel — alpha — that controls opacity. 0 is fully transparent, 1 is fully opaque.
Can I use 3-digit hex codes?: Yes. #abc is automatically expanded to #aabbcc before conversion.