.kc-ce-logo-color-picker {
  width: 100px;
  height: 100px;
  border: 1px solid black;
  background-color: white;
  cursor: pointer;
}

.kc-ce-color-block {
  color: white;
  position: relative;
  width: 100%;
  /* desired width */
  border: 5px solid blue;
  text-align: center;
  cursor: pointer;
}

.kc-ce-color-block:before {
  content: "";
  display: block;
  padding-top: 100%;
  /* initial ratio of 1:1*/
}

.kc-ce-color-block div {
  position: absolute;
  top: 0;
  left: 0;
  bottom: 0;
  right: 0;
}

.kc-ce-color-block.active {
  border: 5px solid red;
}