1, blue background: used for graduation certificate, work permit and resume. (blue values are: R:0 G: 19 1 B:243 or C:67 M:2 Y:0 K:0).

2. White background: used for passports, visas, driver's licenses, ID cards, second-generation ID cards, driver's licenses, black-and-white cards, medical insurance cards, Hong Kong and Macao passes, etc.

3. Red background: used for insurance, medical insurance, IC cards, temporary residence permits and wedding photos? (the red value is: R:255 G:0 B:0 or C:0 M:99 Y: 100 K:0).

Extended data

Precautions:

1. Tell the photographer what specifications you want, including size, number of photos, background color of photos, specific use, and film production method (whether it is a photo that must be developed normally or not).

2. A neat hairstyle is very important. Men should shave, their beards should be neatly trimmed, and women should put on some simple makeup. There is no luster on the face.

3. The clothing should be as stiff as possible, and there should be no obvious folds.

4. Be energetic when taking photos.

Don't be nervous when taking pictures, relax and try to keep a good facial expression.

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