Which artist used complimentary colours?

It's impossible to say definitively which artist *only* used complimentary colors, as most artists use a wide range of colors in their work. However, some artists who are known for their use of complementary colors include:

* Vincent van Gogh: His famous "Starry Night" uses vibrant blues and yellows, which are complimentary colors.

* Henri Matisse: Many of his paintings feature bold, contrasting colors, including complimentary pairings like red and green.

* Paul Gauguin: Gauguin's bold, expressive paintings often feature vivid complimentary colors like red and green, and blue and orange.

* Wassily Kandinsky: He explored abstract forms and color relationships, often using complimentary colors to create vibrant contrasts.

* Piet Mondrian: While known for his primary colors, Mondrian did incorporate complementary colors like red and green in some of his paintings.

It's important to note that many other artists have used complimentary colors in their work. This technique is prevalent in art history and across various art movements.

If you are interested in a specific artist or period, I can provide you with more information.