Concerning color temperature: LED fluorescent lights vs Energy Star CFL lights
We confuse for color temperature this time, In LED lighting area, Usually, The color temperature are:: Warm White (Color Temperature 2700K to 3500k), Daylight white also said as Cool White (5000K to 6500K), Natural white (4000K to 4500K).
But in CFL lighting area, Usually the Color temperature is From Standard of ENERGY STAR http://www.energystar.gov/index.cfm?c=cfls.pr_cfls_color description below
Color & Mood
ENERGY STAR qualified bulbs are available in a wide variety of shades of
white light, ranging from yellowish to white to bluish white light, which allows
you to customize the mood of your space. Many ENERGY STAR qualified bulbs come
in "warm" colors to match the yellowish light of incandescent bulbs, but you can
also choose "cooler" colors with whiter or bluer light.
Choosing the right color:
Light color is measured on a temperature scale referred to as Kelvin (K).
Lower Kelvin numbers mean the light appears more yellow; higher Kelvin numbers
mean the light is whiter or bluer.
Most ENERGY STAR qualified bulbs are made to match the color of incandescent
bulbs at 2700-3000K.
For a whiter light, look for bulbs marked 3500-4100K.
For bluer white light, look for bulbs marked 5000-6500K.
A photograph of various lamps illustrates the effect of color temperature
differences (left to right):
1.Compact Fluorescent: General Electric, 13 W, 6,500 K
2.Incandescent: Sylvania 60 W Extra Soft White
3.Compact Fluorescent: Bright Effects, 15 W, 2,644 K
4.Compact Fluorescent: Sylvania, 14 W, 3,000 K
