Question

I am developing a tool which will convert html colors between maximum any format like RGB, RGBA, HEX, HSLA, NAMED etc.

And also HEX(#FFFFFF) to Alpha HEX (#00FFFFFF) for use in filters in IE6.
But, my problem is that I am unable to convert the alpha value i.e. 00 from Alpha hex color to rgba alpha value i.e. 0.5.
please help me…

Answer 1

Just convert the first 2 digits from hex to number, then divide by 255.

var rx = /^#([0-9a-f]{2})[0-9a-f]{6}$/i;
var m = rx.match(theColor);
if (m) {
   alpha = parseInt(m[1], 16) / 255;
}