Yellow can brighten up a bathroom or kitchen, or make a bedroom seem extra sunny. But it is the most difficult paint color to get right. The wrong choice can make a room gold instead of yellow, or turn a space into egg yolks rather than lemon. If you want to bring yellow into your home, take these steps first.

Go lighter: Yellow dominates a room much more than you would expect. Whatever tone you want, choose one at least two shades lighter. The color strips available at paint stores make this easy. Don’t worry that it will be too light. Yellow reflects off every wall and the color naturally intensifies.

Test test test: Buy a sample of two or three possible yellows. Paint poster boards, one in each color, and try them close to each other. If one of the yellows has an orange or green cast, you’ll be able to tell thanks to the contrast. Choose the purest yellow you can find. Also, put the painted posters on every wall of the room and then see which works best. Yellow changes its mood depending upon the type of light, so check in daylight and artificial light.

Combine with white: Don’t be tempted to use too much yellow. Paint the ceiling white and don’t add yellow cabinets or furniture. Too much yellow quickly takes over a room. White areas help the yellow look brighter without becoming overwhelming.

Yellow can be gorgeous or a real problem. Doing your homework at the start will give you a space that uses yellow at its best.