Why do some ID photos have to have a blue background or a red background?

Because some documents must have a blue background, which is the requirement of government archives management, it is arbitrary and different in different regions.

White background: used for passport, visa, driver's license, ID card, second-generation ID card, driver's license, black and white certificate, medical insurance card, Hong Kong and Macao pass, etc. Blue background: used for graduation certificate, work permit, resume, etc.

Red background: used for insurance, medical insurance, IC cards, temporary residence permits and wedding photos. The point is, you don't need to remember all this. If you go directly to Fang Kuai Studio to take a photo with the photographer, the photographer will know what it is.

With the improvement of background requirements for integrated anti-counterfeiting of electronic certificates, background is also widely used in printed publications. The purpose is to be consistent with the typesetting effect, not too sudden. At present, it is mainly used for various important documents, such as passports and identity cards.

Red, red-means prosperity and good luck. Pink, light red and gradient red-representing sunrise (morning).

Blue can make people quiet and look solemn. Mainly used for academic qualifications and qualification certificates. According to color: 3. 1 normal blue, which is similar to the color of the sunny sky. Mainly used for academic certificate 3.2 light blue, roughly the same color as the sky.

Gray background is mainly used for image photos, but it is rare in strict witness photos. However, at present, young people pursue personalization and differentiation, and there are also some applications. Dark gray, strong contrast, can highlight the characters, appear fair-skinned. Light gray, bright and fashionable, but the background and skin color are easily inseparable.

The gradual change of deep red and light white is also the author's past practice. The red background is deliberately dimmed away from the light source, and then the lights are turned on at the lower position in the middle or at the lower positions on both sides.