Choosing the correct colour temperature is critical factor for the look, feel & application of any area. Warm white sets a more relaxing mood & is best suited for bedroom/lounge areas, whilst daylight & cool white light are better for office/workspace areas where clarity is more essential. Cool white can compliment modern finishes & also works well in kitchens/bathrooms/laundries. It is also important to keep colour consistency so try to stick to one colour in open plan living/dining/kitchen areas otherwise the lighting can clash.
Note that there is a consistent understanding that a cool white LED will produce between 5%-10% more lumens than a warm white LED of equivalent power & this is reflected in the image below. The cool white can also appear blueish when juxtaposed with warm white or daylight but when viewed by itself it appears more white.