Despite it being called "cool white", these lights do not have a blue tint to them. They are a perfect white light, with a slight yellow tint to it. It is very bright, which may not be for everyone (but is what I was needing), and does not buzz or flicker. I tried the GE Reveal and GE Refresh bulbs before getting these. The GE Reveal bulbs were SO yellow and quite dark. The GE Refresh bulbs were bright but also had an extremely blue tint and did not flatter my space at all. These bulbs are a true white light and are very refreshing to a dark space. If you're looking for a cozy vibe, these probably wouldn't be for you. If you're looking to energize your space and bring out true to tone colors, try these! Every color in my house looks AMAZING because of these lights. I am thrilled to have found these and will be ordering just so I can stock up.