Forum Discussion
4x4van
Apr 19, 2015Explorer III
Yes, those color charts are all over the internet, and while they vary a bit, all of them agree that the higher the number, the "cooler" the light. In layman's terms, "cool" is towards the blue spectrum, warm is towards the yellow spectrum. Since high noon daylight is 5000-5500K and is claimed to be the "whitest" possible light, I would consider that the middle, neither warm nor cool. Many color charts agree, and put daylight (5000K-5500K) in a "nuetral" category, with higher numbers (6000K and up) being cool and lower numbers (below 4000K) being warm. That being the case, 4100K is certainly not "cool" by those charts. In fact, a "cool white flourescent" is actually the "name" of the bulb, not the color, and I suspect that it was called "cool" because of the fact that it was "cooler" than incandescents, which were the only widely available light alternative at the time. I stand by my easy to understand "real world" descriptions regarding color temps: warm is yellow, cool is blue, pure/daylight is neither yellow nor blue (and consequently neither warm nor cool), but rather in the middle.
I have purchased numerous LEDs for my RV as well as for my garage/workshop. 4500K does not look blue in the real world, and even 5500K is just barely on the cusp of blue. Of course if you put it next to 3000K, even 4000K looks blue in comparison. But put that same 4000K next to 5000K-5500K (the whitest white there is) and it looks yellow. If you look at the pics of my RV (in the thread I linked), I think you will agree that my lighting, while not yellow, is certainly not "blue" either. Yet the strips under the cabinets were listed (by the seller) as 6000K and the LEDs in the ceiling fixtures were actually listed as 6000K-6500K! I believe that the actual color of mine are likely closer to 5000K (strips) to 5500K (ceiling), not the 6000K-6500K that the seller claimed.
My 2 points were these:
Point 1. Try a few of different colors and types; simply going by the seller's description or listed K specs is not a guarantee of color. Even the Kelvin temps given by sellers can and do vary from each other and may not be accurate. One seller's "cool" may in fact look pure white, while another's will be nearly purple. "Warm" can be anything from yellow to pure white. As another example, I have a roll (strip) purchased for my garage workbench that the seller called "pure white" but is clearly cool. It looks purple; probably at least 6500K or higher. Another roll (from a different seller) labeled the same "pure white" has no blue tint at all, and is probably about 5000K (that's the one I ended up using).
And Point 2.: Cheap LEDs from Amazon or eBay allow you to accomplish point 1 without overspending.
I have purchased numerous LEDs for my RV as well as for my garage/workshop. 4500K does not look blue in the real world, and even 5500K is just barely on the cusp of blue. Of course if you put it next to 3000K, even 4000K looks blue in comparison. But put that same 4000K next to 5000K-5500K (the whitest white there is) and it looks yellow. If you look at the pics of my RV (in the thread I linked), I think you will agree that my lighting, while not yellow, is certainly not "blue" either. Yet the strips under the cabinets were listed (by the seller) as 6000K and the LEDs in the ceiling fixtures were actually listed as 6000K-6500K! I believe that the actual color of mine are likely closer to 5000K (strips) to 5500K (ceiling), not the 6000K-6500K that the seller claimed.
My 2 points were these:
Point 1. Try a few of different colors and types; simply going by the seller's description or listed K specs is not a guarantee of color. Even the Kelvin temps given by sellers can and do vary from each other and may not be accurate. One seller's "cool" may in fact look pure white, while another's will be nearly purple. "Warm" can be anything from yellow to pure white. As another example, I have a roll (strip) purchased for my garage workbench that the seller called "pure white" but is clearly cool. It looks purple; probably at least 6500K or higher. Another roll (from a different seller) labeled the same "pure white" has no blue tint at all, and is probably about 5000K (that's the one I ended up using).
And Point 2.: Cheap LEDs from Amazon or eBay allow you to accomplish point 1 without overspending.
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