Generated by SassMeister.com.

SassMeister-input-HTML.html

<div class="div1"></div><br><br>
<div class="div2"></div>

SassMeister-input.scss

// ----
// Sass (v3.3.9)
// Compass (v1.0.0.alpha.20)
// ----

$baseColor: rgba(225,202,11,1);//#ffde05;
$colorR: red($baseColor);
$colorG: green($baseColor);
$colorB: blue($baseColor);
$colorA: alpha($baseColor);

$baseColor2: adjust-color($baseColor, $red:-30, $green:-150, $blue:+7);//rgba(0,0,0,1);
$colorR2: red($baseColor2);
$colorG2: green($baseColor2);
$colorB2: blue($baseColor2);
$colorA2: alpha($baseColor2);

.div1, .a{
  background: $baseColor;
  &:before{
    content:$colorR + ', '+ $colorG + ', ' + $colorB + ', '+ $colorA;
  }
}
.div2{
  background: $baseColor2;
  color: white;
  &:after{
    content:$colorR2 + ', '+ $colorG2 + ', ' + $colorB2 + ', '+ $colorA2;
  }
}

SassMeister-output.css

.div1, .a {
  background: #e1ca0b;
}
.div1:before, .a:before {
  content: "225, 202, 11, 1";
}

.div2 {
  background: #c33412;
  color: white;
}
.div2:after {
  content: "195, 52, 18, 1";
}

SassMeister-rendered.html

<div class="div1"></div><br><br>
<div class="div2"></div>