In various series of paintings (Divisions, Heraldic, Bends, Compass, etc), Roy Osborne’s illusory abstract works explore implied depth, figure-ground ambiguity, pattern, symmetry, hard versus soft edge, implied transparency and light-and-shade. His works typically feature horizontal, vertical, diagonal or curvilinear divisions of a square, and are primarily concerned with colour contrast, harmony, contour, mixing and texture. Regular patterns encourage the eye to explore arrays of colours, with points of focus provided by elementary shapes defined by prominent colour contrasts. Influences include Robert Delaunay, Paul Klee, and American Minimalism, plus texts on colour and form perception. Roy has participated in over 150 group and solo exhibitions since 1970 and taught and lectured extensively on colour, art, and history at over 200 institutions worldwide. His main publications are ‘Lights and Pigments: Colour Principles for Artists’, ‘Renaissance Colour Symbolism: Primary Sources’, and ‘The Color Coursebook for Art Teachers and Students’. In London in 2003 he was awarded the Turner Medal of the Colour Group (Great Britain), and in Buenos Aires in 2019 he was awarded the International Colour Association Medal for Colour in Art, Design and the Environment (AIC CADE).