What is the ideal lumen output and temperature range for my computer room?
"Calculate the correct lumen output" &amp;  "ideal lightbulb temperature"


implies a lot more definition to "correct" and "ideal" than seems likely to apply to a matter of individual tastes. For some folks the light in the computer room comes only from the screens, and it goes up from there. There may well be architectural standards, but whether you like the result is going to vary anyway. So:

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Try different bulbs until you like one.

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Or: Replace switch with (LED-rated) dimmer and adjust to suit. This can actually be tricky as many LED dimmers have minimum loads for stable operation that are more than a single bulb. Also, the LED needs to be "dimmable."