Lebasque started his education at the Ecole des Beaux-Arts d’Angers, and moved to Paris in 1886. There, Lebasque started studying under Léon Bonnat, and assisted Ferdinand Humbert with the decorative murals at the Panthéon. Around this time, Lebasque met Camille Pissarro and Auguste Renoir, who later would have a large impact on his work. Lebasque's vision was coloured by his contact with younger painters, especially Edouard Vuillard and Pierre Bonnard, founders of the The Nabis' Group, who were the Intimists that first favoured the calm and quietude of domestic subject matter. From his first acquaintance with Georges Seurat and Paul Signac, Lebasque learnt the significance of a colour theory which stressed the use of complementary colours in shading.