ArtworkOpen No. 17: In Ultramarine with Charcoal LineSign in to saveRobert Motherwell — 1968 — Synthetic polymer paint and charcoal on canvasArtwork · Museum of Modern ArtSynthetic polymer paint and charcoal on canvasArtistRobert MotherwellMediumSynthetic polymer paint and charcoal on canvasView at Museum of Modern Art · Open Access