5500k is a high color temperature, although it is close to sunlight. But in foggy days, it will be greatly discounted.

Although the brightness of 4300k is not high, it has good penetration and is safer for rainy and foggy days.

colour temperature

Color temperature is a unit of measurement, indicating the color components contained in light. Theoretically, color temperature refers to the color of an absolute blackbody heated from absolute zero (273℃). After heating, the black body gradually changes from black to red, yellow and white, and finally emits blue light. When heated to a certain temperature, the spectral component of the light emitted by the blackbody is called the color temperature at this temperature, and the unit of measurement is "K" (Kelvin). If the spectral components of the light emitted by the light source are the same as those of the black body at a certain temperature, it is called a certain K color temperature. For example, the color of the light emitted by the 100 W bulb is the same as that of the absolute black body at 2527K, then

Light sources with different color temperatures have different light colors and bring different feelings:

Color temperature and brightness: under the irradiation of high color temperature light source, if the brightness is not high, it will give people a cold atmosphere; Under the irradiation of low color temperature light source, too high brightness will give people a sultry feeling. Contrast between light and color: When two kinds of light sources with large differences in light and color are used in the same space, the contrast will have a hierarchical effect. When the contrast between light and color is large, the brightness level can be obtained at the same time.