CSS: #072237 is changed into 1072237

Testing command: phpcbf --standard=Drupal .

The following line in CSS:

        background: #072237;

is converted into:

  background: 1072237;

so # character is changed to 1. Is it correct?

Here is the whole context:

    .mortgage-calculator h2 {
        background: #072237;
        color: #fff;
        font-weight: normal;
        height: 50px;
        line-height: 50px;
        padding: 0 0 0 30px;
    }

The same for:

        border-top: 5px solid #000;

is changed to:

  border-top: 5px solid 1000;