Portrait of Louis-Auguste Schwiter, 1826-30, by Eugène Delacroix
This gorgeous portrait shows off the magic touch Delacroix had as a colourist in a wonderfully subtle way. Delacroix is not famous for understatement. He was the archetypal painter of French romanticism. His big paintings in the Louvre such as The Death of Sardanapalus, Women of Algiers and The Massacre at Chios tremble with sex, violence and horror. These over the top scenes with their sensuous use of colour fascinated modern pioneers such as Cézanne and Degas (who owned this painting). Yet here Delacroix plays it quiet. An elegant Schwiter stands in black, against a dark landscape. Only isolated touches of vibrant colour animate him – a glistening blue vase, the red silk inside his hat – yet the effect is brilliant. This is a portrait set alight by a dash of painterly genius.
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A detail from Tacita Dean’s work Ear on a Worm, 2017, part of the Still Life exhibition at the National Gallery, London. Photograph: Courtesy the artist/Frith Street Gallery/Marian Goodman Gallery 
