Against warm plaster, the deep blue reads less sweet, more deliberate. The irises sit flat and graphic, with a soft grey-brown ground behind them and a strong band of dark green at the base. The room slows down around it. Hang it above a low sideboard, a writing desk, or a console in a hallway where you want a moment of pause. It sits well with oak and walnut timber, linen upholstery, paper shades and stoneware in cream or clay. Keep the wall around it quiet — chalky off-white, soft grey, or a deep green that picks up the foliage. Avoid pairing with high-contrast graphic posters or anything in bright primaries; the blue wants room to breathe.