function RGB2Color(r,g,b)
{
return '#' + byte2Hex(r) + byte2Hex(g) + byte2Hex(b);
}
function byte2Hex(n)
{
var nybHexString = "0123456789ABCDEF";
return String(nybHexString.substr((n >> 4) & 0x0F,1)) + nybHexString.substr(n & 0x0F,1);
}
原文:https://blog.csdn.net/monkindey/article/details/24845745