In my eyes, it is a dark grey. The colour anthracite should probably be a little darker.

It has been my experience that the picture shown on the galaxus.ch website does not always correspond to the colour in stock under the corresponding item no.. The item no. 5896137 is actually in the colour Graphite. I have this one at home.
You can also look up the colour on the link "Specifications", then >> "Manufacturer's page".
I was also supplied with the wrong colour for another Fjällraven backpack. The correct colour shown was no longer available.
It would save the buyer a lot of trouble if the colour on the website also corresponded to the correct item number in the warehouse. This defect must be urgently rectified by Galaxus.