4000K LED strip light is white light showing a little yellowish but not as yellow as warm white.
Led light 4000k vs 5000k. It is not. First and foremost the difference between 5000K and 6500K can be thought of as the relative amounts of yellow vs blue On a relative basis 5000K is yellower than 6500K and 6500K is bluer than 5000K. The brightest HID color temperature is 5000K emitting perfectly white light.
A 4000K LED bulb produces a bright white or cool toned kind of color which gives a warm effect as well as bright enough to work beneath it. 4000K appears as a cool white light when viewed on its own but when compared to a 5000K light 4000K looks to contain some yellow. I realize that 4000K is for Veg and 3000K is for Flower.
V-2s are a bit higher. 4000K looks more pure and transparent than 2700K or 3000K. This is why its always best to check the color temperature when you buy a new energy efficient bulb.
Most widely used are 2700K 3000K 4000K 5000K 5700K 6000K and 6500K LED lights. Above 5000K Color Temperature. The AMA report referenced the harmful environmental effects of LEDs with a CT above 3000K but also suggested a possible link between these LED lights and damage.
Both 3000K and 4000K are still on the warmer side of the Kelvin scale as LED light fixtures can still reach 4800K 5000K and up to 6500K color temperatures. Compared with 5000K 4000K is softer. Which one should you use for the kitchen.
The advantage of of 5000K for veg is that your get tighter internodes which gives you a more balanced distribution of light over the colas later. 3500k vs 4000k vs 5000k. It is basically the measure of the temperature of the lights.

