ABSTRACT In a post-Covid context, the term presence has become the subject of renewed academic focus, amplified by mass phenomena such as Zoom fatigue and online classroom teaching. The prism of new materialism allows for a new reading of relationships between technology and human sensing, physical and virtual presence and copresence, with possible design implications: Current research in public health and social-environment discourse is interested in the effect of presence on well-being. As a theoretical framework, new materialism provides a lens that foregrounds complex relations between affect and technology, enabling us, through interventions like the KIMA: Colour participatory artwork, to interrogate the broad discourse on mediated presence and social connectivity. This paper provides an overview of the AHRC-funded research project, 'p_ART_icipate!', which is a collaborative investigation led by the University of Greenwich, CNWL NHS Foundation Trust, and Brunel University. This paper describes one of the case studies within the project, ‘KIMA Colour’, a collaboration with the art collective Analema Group, the National Gallery and the Royal National Institute of the Blind (RNIB). The case study explores the effect of collective cultural experiences and participatory art on a sense of social connectivity and copresence. In collaboration with RNIB and a group of visually impaired individuals, the team asked how we can design meaningful and accessible online interfaces that actively contribute to a sense of ‘participatory presence’. Findings suggest a possible link between the experience, presence and social connectedness. This research aims to contribute to our understanding of participatory art and to provide recommendations for accessibility and facilitation designc for participatory online interfaces.