>>3820007blue color = cool light
red color = warm light
the coolness or warmness of a light is not given by the temperatures of the light source, temperature of the environment it heats, or the temperature of the observer, but the cone cells it excites
white is the highest intensity of blue, therefore its the coolest light. A 3W light bulb emitting blue light, the sun at the middle of the day, both are cool lights, no matter the heat they produce. A candle, fire, sunrise/fall, a red bulb are warm lights, no matter the temperature of the light source
bonus fact: because we are diurnal creature, cool lights wakes us up, and warm lights tell our body its time to hit the bed. If you have troubles sleeping, make sure you see no cool light sources 1.5 h before hitting the bed, and if you want to wake up easier or stay away longer, stay away from warm lights sources.
Theres this awesome free program which I recommend, called f.lux. You give it your location on glove, and the hour you want to wake up, and it change the colors your display will show. But I have my monitor calibrated for maximum cool lights and it works great for me. I dont know how it would work with a warm calibrated monitor, because afaik it tells the OS what colors to display, not the monitor itself.
At day (or atleast at day calculated by the hour you gave it to wake up) it will show cool light (hint- thats the best time to draw on the monitor, best color accuracy), before going to sleep about 4 hours, and 1 hour after sleeping it will show warmer lights, and at night very warm lights. Once you will have 9h before the hour you told the program you wake up, it will tell you each half an hour how much time you have left before waking up.
I also recommend, blocking the windows if your sleep schedule does not respect the sun, getting a bright cool bulb for your wake up time, and a lamp with warm light for when getting close to sleep hour.
Also try to not use the phone at the warm light interval
