Access the value of a disabled field in a twig template
Try to add it on you hook_preproccess_node to variables.

something like following snippet could help you.

on your THEMENAME.theme

function THEMENAME_preprocess_node(&amp;$vars) {
    $node = $vars['node'];
    if(isset($vars['node']) &amp;&amp; $vars['node']-&gt;getType()=='YOUR_CONTENT_TYPE_MACHINE_NAME') {
        $values = $node-&gt;field_color_backgroud-&gt;entity-&gt;getValue();
        $vars['myvar'] = $values[0];
    }

}


Then on your TWIG file {{ myvar }} will be available.