Sylvania: Natural 3500K A19
Sylvania Natural 3500K A19 light bulb test results
The verdict
A 3536K LED filament A19 bulb. Its color rendering is fair (CRI 89, R9 50) and its body-clock signal is high (63% of daylight).
A solid everyday bulb with no major weakness in my tests.
CRI 89 · Rf 91
CRI Re, the average of all 15 samples (Ra 92). #59 of 84 white-light bulbs.
R9 50
Saturated red: skin, wood, food. 100 is perfect. #63 of 86 white-light bulbs.
3536K
Sold as 3500K. Gap from natural light 16% (moderate). Tint 0.0000, close to neutral.
63% of daylight
Melanopic DER 0.63. Low is easier on sleep at night; high helps you feel alert by day.
The light
Measured spectrum, 380 to 780 nm, scaled to its peak.
How colors look
The red line pulls out where colors get more vivid and pinches in where they dull. Hover a bin for its numbers.
Where it ranks
Every white-light bulb I have tested, in its own light color. Left is warmer, up renders color more truly. Tap a dot to open that bulb.
This bulbOther bulbsFaded: discontinued
Truer color, same color temperature
Still sold, within 300K of this bulb, with a higher CRI.
Sylvania Natural 3500K A21CRI 90 · R9 53 · 3418KSimilar bulbs
Still sold, near the same color temperature, same E26 base where one qualifies.
Same line, other versions
Other Sylvania Natural bulbs I tested.
Specs
Power, brightness and efficacy marked "rated" are the manufacturer's numbers. I have not measured them yet.
- Brand
- Sylvania
- Model
- Natural
- Type
- LED filament
- Shape
- A19
- Base
- E26
- Finish
- Frosted glass
- Power (rated)
- 11W
- Brightness (rated)
- 1,100 lumens
- Efficacy (rated)
- 100 lumens per watt
- Dimmable
- Yes
- Sold as
- 3500K
- Measured
- 3536K
- Gap from natural light
- 16% (ASD)
- Tested
- Feb 18, 2023
- Instrument
- Handheld spectrometer (before the integrating sphere)
- Status
- Available