Yellow, the sunshine color, could be used as a primary color, or an accent color. Although most shade of Yellow look good on almost all objects of decor, the taxi cab yellow is not the preferred color of choice for most people. Yellow could be used in rooms that don't get much of natural lighting. This color also blends well with greens and blues, and also white. As complementary colors, you could use pale greens and pinks in spring/summer, navy in winter, and brown color in the Fall.
Yellow is abundantly found on accent pieces such as throw pillows, candles, side tables, ceramics, and curtains.