Answers for "css rgb color with opacity"

background color css rgb

body {
  background-color: rgb(255,255,255);
}

opacity color

.opacity30 {
  opacity: 0.3;
  filter: alpha(opacity=30); /* For IE8 and earlier */
}

rgba red color

rgb(255,0,0)  /*red*/  Hex  #FF0000

rgba green color

rgb(0,128,0)  /*green*/  Hex #008000

background color with opacity

h1 {background-color:rgba(255,0,0,0.3);}