The orchids have been arranged in an appealing composition in this oil painting. The tinges of red, yellow and blue in the white orchids give them the depth and make them pop forward from the light background. The dark centres of the orchids have touches of crimson lake and cadmium yellow. The pink flowers go well with the white orchids.

Orchids in a Vase
The dark vase on the wooden table with leaves hanging around provide a contrast to the white flowers. The shades of the wood were formed by mixing reds, blues and yellows. The light and the dark areas are depicted by mixes of these three primary colours. The wooden table formed the basis of many subsequent paintings. The rim of the vase is highlighted to show the light shining on it. The shadow of the vase is falling forward on the table.
Hope you have as much joy viewing the painting as I had while creating it!