W3C home > Mailing lists > Public > www-style@w3.org > August 1996

Re: transparancy and RGB()

From: Mike Wexler <mwexler@mv.us.adobe.com>
Date: Tue, 20 Aug 1996 08:22:44 PDT
Message-Id: <199608201522.IAA19117@orion>
To: Chris Lilley <Chris.Lilley@sophia.inria.fr>
cc: Chris Josephes <cpj1@winternet.com>, www-style@w3.org

> On Aug 14, 10:34pm, Chris Josephes wrote:
> > Has any thought been given to the idea of specifying varying levels of
> > transparancy?  What about the idea of specifying the transparancy level
> > directly in an RGB value, such as....
> >
> > p { background: rgb(20%,0%,0%,50%)} /* final value = transparancy level */
Wouldn't it bet better to do
    p { background: rgba(20%,0%,0%,50%) } /* fine value = alpha (opaqueness) */

In the first example it is called rgb, but for values are supplied.
Second, in computer graphics Red, Green, Blue, Alpha is much more common
that Red, Green, Blue, Transparency.

> That would be an interesting addition, and would fit well with image formats
> that support true variable transparency such as PNG and JPiG. 
Is JPiG a new format or just a mispelling of JPEG or JFIF?
Received on Tuesday, 20 August 1996 11:28:00 UTC

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