Watercolour on Paper refers to a painting technique in which pigments suspended in a water-based solution are applied onto paper. Known for its transparency and fluidity, the medium allows artists to build delicate washes of colour and subtle tonal variations. Artists such as J. M. W. Turner and Winslow Homer demonstrated the expressive potential of watercolour, using its luminous qualities to capture atmosphere, landscape, and fleeting moments with remarkable immediacy.