Coranus subapterus, Heeswijk-Dinther, Netherlands

This is not the most useful photo for identification, so the species is tentative, but likely. The Netherlands has only 7 known assassin bug species, seen here:
https://www.nederlandsesoorten.nl/linnaeus_ng/app/views/species/nsr_taxon.php?id=158026&cat=CTAB_MEDIA

Given body build, the only serious candidates are Coranus subapterus and Coranus woodroffei. The typical reference image of either species looks somewhat different (more neutral tones), yet I did find this:
https://waarneming.nl/photos/23725513/

Possibly it's a young adult, not yet in its final color.