The three traditional sets of complementary colors, as derived from the Red-Yellow-Blue color model, are red and green, yellow and purple, and orange and blue. You can see them positioned opposite one another on the color wheel above.
Then, what colors look good with yellow?
One of the best qualities of the color yellow is that it goes great with nearly every other color -- white, orange, green, pink, blue, brown. Pick one or two shades of yellow to use as accents, plus a dark neutral, and include doses of white for a balanced color palette.
What color stands out on yellow?
Using yellow also makes in easy to use orange, red and green which all work great together in a signage system. Also for traffic signs yellow works good as background color in combination with black lettering. In a outdoor situation, yellow stands out from its background giving a clear message.