Avoid using 4000 to 5000 kelvin bulbs in a blue kitchen if you want warmth. These cooler white or daylight bulbs accentuate blue’s clinical feel, making the kitchen feel cold and disconnected. Instead, opt for warm white LEDs with 2700 to 3000 kelvin temperature and a CRI above 90. This lighting choice softens blue tones, adds cozy ambiance, and better integrates your kitchen with warm adjoining spaces.