My current home office has a ceiling light fixture with three slots, adapted to low-wattage incandescents. I've plugged in three Hue bulbs I had sitting in a drawer, and tuned them to full intensity and color temperature as close to natural daylight as the bulbs can get. As a result, the lights almost always outshine the available daylight. I feel pretty comfortable with this temperature and intensity. Plus, my eyestrain reduced a bit, as the difference between room lightning and computer screen brightness isn't that big anymore.

On evenings, my color filters kick in on the screens, and I either kill two of the three bulbs, or bring their color temperature down.