如何把256,256,256这样的颜色的值转换为#00000这样的值？

[fish365]

以便在网页上显示。

[fish365]

谁能提供一下算法，thanks a lot。

[chinesun]

例子
<%
Function RevRGB(red, green, blue)
RevRGB= CLng(blue + (green * 256) + (red * 65536))
RevRGB= Hex(RevRGB)
End Function
%>

[chinesun]

上面是自定义函数。

[Reker熊]

公式:
blue+(green*256)+(red*65536)

[xuzuning]

<script>
function rgb2hex(r,g,b) {
var m = 256;
r = (r%m).toString(16);
r = r.length==1?"0"+r:r;
g = (g%m).toString(16);
g = g.length==1?"0"+g:g;
b = (b%m).toString(16);
b = b.length==1?"0"+b:b;
return "#"+r+g+b;
}

alert(rgb2hex(256,255,255));
</script>

[xuzuning]

<script>
function rgb2hex(r,g,b) {
var m = 256;
r = (r%m).toString(16);
r = r.length==1?"0"+r:r;
g = (g%m).toString(16);
g = g.length==1?"0"+g:g;
b = (b%m).toString(16);
b = b.length==1?"0"+b:b;
return "#"+r+g+b;
}

alert(rgb2hex(256,256,256));
</script>