Edit in JSFiddle

<div class="wrapper">
  <div class="color-picker" name="color">
     <div class="color-indicator" name="color"></div> 
  </div>
  <div class="preview"></div>
  <div class="hue palette" name="hue">
    <div class="slider" name="hue"></div>
  </div>
  <div class="alpha palette" name="alpha">
     <div class="slider" name="alpha"></div> 
  </div>
  <h5 class="hex result">#fff</h5>
  <h5 class="rgb result">rgba(255, 255, 255, 1)</h5>
  <h5 class="hsl result">hsla(0, 0%, 100%, 1)</h5>
</div>
<div class="target">Change my color pls!</div>

@import url(https://fonts.googleapis.com/css?family=Quicksand);

html, body {
  margin: 0;
  box-sizing: border-box;
  height: 100vh;
}
body {
  background-color: #333;
  font-family: 'Quicksand', sans-serif;
  padding-top: 20px;
}

.wrapper {
  background: white;
  margin: 0 auto;
  width: 200px;
  height: 265px;
  border-radius: 3px;
  border: 1px solid #666;
}

.color-picker {
  width: 200px;
  height: 120px;
  margin-bottom: 15px;
  border-radius: inherit;
  background: darkred;
  overflow: hidden;
}

.preview {
  background: darkgreen;
  float: left;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  margin-left: 12px;
  border: 1px solid #eee;
}

.palette {
  background: darkblue;
  width: 120px;
  height: 12px;
  margin-left: 60px;
  position: relative;
  border-radius: 1px;
  margin-bottom: 10px;
}

.result {
  color: #aaa;
  margin: 0;
  line-height: 2;
  text-align: center;
  user-select: auto;
}

.target {
  width: max-content;
  margin: 0 auto;
  padding-top: 10px;
  color: white;
  font-size: 24px;
  cursor: pointer;
}