WorldOfEngineering
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Soft white (2,700 to 3,000K) for living rooms, dens and bedrooms
Warm white (3,000 to 4,000K) for kitchens and bathrooms
Bright white (4,000 to 5,000K) for work spaces
Daylight (5,000 to 6,500K) for working, reading or applying makeup.
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Varenvel
cool lights makes my eyes hurt.
Islandvoid
K
geoxol
Love how we can chat about light bulbs with complete strangers online ?
QWAS2123
Most favorited post I’ve ever seen!!!
ThatBobbyG
Soft or warm light throughout the house, no overhead light, only lamps, except the kitchen and laundry room. That's the chillest.
thoushaltnotpass
Your office space needs 6K only if you're doing manual/precision work. Warmer light will be better for your sleep pattern at night.
BreakTheCode
Can’t stand that yellow light. Each to their own though. Warm white does help regulate sleep
Gaelwyn
This is a constant fight at my house. My SO is a fan of daylight and I hate it. I prefer blue for working and yellow for relaxing.
ZeldaHyruleGold
Philips hue smart bulbs. They do the same gold to blue lights in there 1 light bulb, set timers and routines based on habits.
toobiwanyoulisten
Until your damn wifi goes out
ImSorryIfYouGotOffended
I've always loved that warmth feel of a house when walking by my neighbourhood. Changed to 2700k. Love it. Very calm and relaxing. (1
gosomethingwitty
Warmer whites help to make you feel tired at night naturally. Scientifically backed.
ImSorryIfYouGotOffended
My parents love absolute white, +4000k must. It's like a mall. Hurts my eyes. I mean, as post states, our kitchen too is 4k.
MaintenanceGuyHere
Cheap daylight bulbs will have a blue tint to them
vkmi
Fuck this. Soft light everywhere.
gosomethingwitty
Mornings and daytime areas without natural light are better with cooler temps. At night warmer is better to promote sleep.
AP116
Yes! This is all wrong. In a residence you want same kelvin throughout. It's terrible mixing from space to space. 2700k for a house.
AP116
Also I'm a residential architect and I work with lighting designers a lot. This advice in post is 100% wrong.
Ktet709
I sell lighting, clothing stores often use 5k-65k because the more whiteish blue light tends to make colours pop and look nicer in stores.
DEADGUY247
Omg this was the guide I needed last week at Home Depot
Ulfhedna
The place I moved into had all daylight/cool light and it gave me a headache. Felt like I was going to be interrogated
Easykehl
If you’ve hooked up color changing bulbs to your home assistant, here are some common ‘white’ colors:
whyWontKeiraKnightleyReturnMyPhoneCalls
Anything above 4000K makes me feel like my eyeballs are getting stabbed by solid light
LooseMooseNoose
This was very illuminating, thanks!
sangatster
Go to sleep Dad. It's past your 8:00pm bedtime.
LooseMooseNoose
1:15hrs to bedtime, GMT+1
CMoeBaggins
Engineers and photographers have different definitions of “daylight” color temperatures.
BenSpacey
Engineers just use a larger range. Daylight colour as in sunlight is around 5600K
ignimbrite
I wouldn't use anything above 4k in my house OUTSIDE of a light for painting warhammer.
ZeKiller
ZeKiller
shaggykx
I got bright white in the bathroom and kitchen, warm white everywhere else through the house
gosomethingwitty
Should use warmer colours in bathroom if your using those areas before bedroom. They will help you get better sleep
shaggykx
I think a 3 month old with a blood curdling scream is more detrimental to my sleep than the colour of my bathroom light :)
BusMuffin
Right? How else you meant to see shit properly
JustSomePersonThere
Wait a goddamn minute: the higher the temperature, the cooler the light?
sangatster
Always seems backwards to me too.
JustSomePersonThere
It is. It really fucking is and I kinda hate it for that.
c3h8
Shorter wavelengths have higher (photonic) energies. They require higher temperatures to have sufficient population at those energies.
gosomethingwitty
Think of a piece of metal being heated. It will glow red before it glows white.
JustSomePersonThere
So why not call the 6000k warm and the 3000k cooler?
gosomethingwitty
Because marketing and being used to water temp. Warm like fire/red. Cool like ice/blue.
JustSomePersonThere
I understand now. Still don’t like it! But at least I get it — thx!
ProgeriaProstitutes
We associate the orange light of fire or candles with warmth because it's usually inside and blueish daylight with cold because it's outside
JustSomePersonThere
Where I live (and in the majority of the world for that matter) it’s the other way around. Outside == hotter.
HypnagogicHallucinations
When looking at side-by-side mock up displays like this, I always think I want the whitest white and don't like the yellow. But in practice,
HypnagogicHallucinations
somewhat warmer colors are actually more pleasant.
TheMightyElk
5000k..every light... Every room.. All day every day
bigkingdingaling
Exactly. 90w equivalent br40 bulbs protruding from every recessed fixture too
sangatster
Elks understand
BrazilianThunderPanda
3000K is traditional incandescent. Anything 4000K or over does not look like day light it looks like a sanitary surgical operating theater.
sangatster
Oh thank you! This is exactly the look i was shooting for!
gosomethingwitty
2700k is incandescent or halogen. 3000k and above is compact Fluoro/LED mostly.
UWantSumFuk
The Sun's colour temperature is about 6000K
newAccountOnlyOnePurpose
I'm suspecting that these temperatures are off from the actual mean frequency of a blackbody spectrum.
BenSpacey
Not really.
Easykehl
Unpopular option: I set my tunable LED lights all the way down to 2000k. Super fucking cozy vibes and can actually fall asleep later.
gregoryjacksonhaley
What tunable LEDs do you use?
gosomethingwitty
It’s actually helping your body release melatonin to help you feel tired and promote sleep.
anonamos
I keep my RGBW tuned right out of white temp mode. They're basically the color of fire embers anytime past sunset.
BeanBagKing
Gimme that 7k in a 100w baby. I'll burn your eyes, but by god I can see what I'm doing!
XanCrews
ItsMeSanders
Perfect response
AllTheGoodOnesWereGone
I put strips of RGBW LEDs across the little loft space in the bedroom and I can ask Alexa to set them to any color and brightness. Like $60.
FiftyShadesOfCauliflower
On the other hand, if you want to stay awake and be able to focus in artificial light, 6500k is the way to go. Great for plants too.
gregoryjacksonhaley
What is your recommendation for 6500 lights ?
FiftyShadesOfCauliflower
They're typically sold as full-spectrum daylight bulbs / fluorescent lamps. There are even full-spectrum LED lamps these days. They're ...
FiftyShadesOfCauliflower
all in the 5,500 - 6,500 K range. Unless you work in design and print, it doesn't have to be exactly 6500k, just enough blue & minimal UV-B.
brewberry
Light designer here. There's more to it than just CCT. Be careful about CRI index when chosing your lighting, it makes a world of difference
EmptyHouseBurglar
I installed 40 skin recessed LEDs in a large space, and they're impossible / painful to look at even on dimmers. Abrupt wavelength distr. ?
DamnedIfYouDo
Lighting designer here: you are correct. Also: if you're a turtle, you're going to need to special order.
Ryebread91
What is cct?
gosomethingwitty
CRI should be above 80 at least or 90 if you’re expecting results.
WendyTheWendigo
Can you do a post about adaptive lighting? Basically you have LEDs installed on one system and they reflect the natural light of outside e.g
WendyTheWendigo
blue in the day then imperceivably dulls to orange during sunset - meant to help with circadian rhythms
Conejito
.
ARoseByAnotherUsernameWouldSmellAsSweet
Got any strong feeling about those UV LED sunspectrum-lamps? Recently had some installed at a building I‘m working on at work, looks great
Srcsqwrn
I don't understand
NobodyCanEnjoyNiceThings
Lighten up, Francis
ohnogungadin
I need the right light for my upstairs hallway, looks like a hospital now, gunna paint it a warm white, some natural light. Any free advice?
Kagenical
Yeah, temperature inside, imagine using low pressure sodium for everything. LOL. I really like mixing the self ballasted LED these days.
Anonawesome
Why would LEDs need ballasts? Never heard of those.
GodzillaHarddiskson
They don't, but rather a driver
Anonawesome
Oh okay makes sense. Wanting to convert the incandescent lights in my garage at some point.
mugman1
TLAs? this guy fucks
Xandelle
Which lighting is best to not look ugly in every photo?
LordHamburger
Lighting designer here. CRI is a flawed system. TM-30 will prevail and shadow CRI in time.
MiningOx
Lighting engineer. Adjustable Color Temp is finally hitting the residential market. These new bulbs match the color temp of the sun.
MiningOx
So they will be warm in the morning cool at mid day. And warm in the evening again. This keeps your circadian rhythm intact.
xmasbreakandmsphillipsdontgivea
I cannot like this enough! This is amazing and now I want them in every fixture in my house. They are a million $ a piece, I assume?
ProxyPlayerHD
ah yes, the "CRI Index", ie "Color rendering index index". it's like people saying "LAN Network" or "ATM Machine"
toxcrusadr
Hamburger meat.
natoshi
Pantone PMS116C Coated
sfwillo
Could you explain more about CRI please?
DonkeyOD
80 is good enough. Bump up to 90 in areas where you really need to, like artwork display
Ktet709
Agreed
UsernameMayBeSubjectToChange
Just the job for 140 chars
Ktet709
Colour rendering index, the closer a light is to a natural light. Also, colour doesn't make a bulb brighter, that's a common mistake made.
soulsource
It's because neither the gas used in flourescent lamps ("energy saving lams"), nor LEDs have a continuous spectrum. 1/2
soulsource
There's additionally flourescent material used that broadens the emission. The CRI is a measure how well the visible spectrum is covered.2/2
Ktet709
Wattage and lumens determine the brightness.
brassmule
You've got lux and candela to consider, too, depending on where the lighting source is located.
Deathtospam
JE NE SPRECHEN ZE LUMENS
NextSpark
What is CRI?
forelle
Know the old streelights where everything just looks black and white w/ no colors? This is what happens when the CRI is very low.
LicensedAdHominem
I love low pressure sodium lamps. My streets use high pressure, so the first time I saw low backstage of a theater. It looked incredible.
uglyhashmash
Think of CRI as how saturated your colours are, 100% i.e tunsten has the full spectrum. LED - 60-90%
NeverDownvoteMelBrooks
Color Rendering Index. I learned, it's basically how accurately a light source reveals actual color. (higher# CRI = better color accuracy)
Veraatje01
What he said. You typically want high CRI in for instance your bathroom and kitchen so you can do your make-up and cook food accurately.
audioknob
Low CRI LEDs will make everything in the room look washed out, regardless of colour temp
xVVitch
Artists use 5000-6000k for color accuracy.
SaucyFineBolognaFactory
Dot
TaranisGodofThunder
.
ADyslexicWalksIntoABra
Even CRI can be misleading, spectrometry is where it's at. Fellow light designer here. Check out turtle friendly LED's ?
Kukiniloa
I remember when incandescents produced a nice warm black body spectrum
EalisLav
DO you know of any white LEDs with supplemental cyan?
MikeStinse
There are some full spectrum whites as well as some fixtures containing several adjustable wavelengths with good color blending.
Goomagon
My experience has shown me that even when we use amber (turtle friendly) wavelengths, they still want a physical shield to block it
evil66gurl
Turtle friendly?
ADyslexicWalksIntoABra
The LED light spectrum is specifically engineered so that it doesn't cause baby turtles to confuse it with the moon and think it's the way?
ADyslexicWalksIntoABra
?
ADyslexicWalksIntoABra
Woopsie
Spooner1
You should make a post about that. Also, is googling "cri index" going to be enough to learn more?
PostmasterG
lecture
SoyDelBerrinche
Yes, this...
sirfanciesadrought
The most basic thing to know is, the higher the CRI index, the higher the brilliance. Of course, very high ones would be costly so get what
sirfanciesadrought
what your budget permits.
ARoseByAnotherUsernameWouldSmellAsSweet
It‘s just a percentage of how natural colors look to our eyes compared to what they‘d look like in direct sunlight. In germany we can‘t
ARoseByAnotherUsernameWouldSmellAsSweet
Install anything lower than 80, and that‘s fine most of the time. 90% is where it gets indistinguishable for most things except art etc.
ParallelParkingInABurka
Wie praktisch! Danke für den Kommentar, dachte schon ich muss auf eine Google-Odyssee gehen...
ARoseByAnotherUsernameWouldSmellAsSweet
Gern geschehen!
ARoseByAnotherUsernameWouldSmellAsSweet
The index derives from the spectrum of the light source. Most modern white leds are actually blue, with a layer of „paint“ that emits yellow
ARoseByAnotherUsernameWouldSmellAsSweet
light when agitated by blue light. To the human eye, this looks white, but for example a green object would lose saturation compared to blue
Saici
I'm german and I didn't know this. Thank you, stranger
ARoseByAnotherUsernameWouldSmellAsSweet
You can‘t even sell anything below 80 here, so it‘s probably not as big a deal as it might sound at first
GarmBlack
I want every room in my house between 4k and 6k. I hate that super yellowy light.
Nicalanius
Exactly.
YoSamiteSam
Countries where gas was used for lighting prefer yellow, countries that didn't have gas prefer white light.
YoSamiteSam
I personally recommend white down lighting and yellow face level lighting, and colored accent layers. Turn a layer off for less intensity.
NaughtButOne
I use strictly daylight lights everywhere. I want proper colour representation, and when I get tired of it, I just... turn off my lights?
BioshockDaddy
My house is roughly this way. I use warm lights in all lamps for night time to relax.
PrincessSnugglebutt
Same. I go nuts finding just the right light bulbs
Feldspartacus
I'm with you. Just looking at the cool side of that pic is literally relieving stress from me right now.
fishlies
Same, but it's generally hard to find dimmable bulbs in E14 or e27 that are at least 4300k or higher. And they cost a lot lore
KPopGirlKimi
I hate the yellow light in bathrooms too. I do my makeup by the sink and the yellow light fucks up my foundation and shading
Hairarse
ImAFoxButNotReally
You're like my wife. She says otherwise she "doesn't see". She's always complaining there's little light although there's plenty enough.
GarmBlack
I def agree with your wife. I feel like the yellow light often doesnt "light" things enough. Maybe there's something with rods or cones here
ImAFoxButNotReally
Maybe. She wear glasses. She has astigmatism and myopia.
gosomethingwitty
Better in the morning or when you’re up and about but at night you should be limiting your light exposure and warmer = better for sleep
Ryebread91
Same for my wife. She wanted all white for our kitchen table where she's sewing and mostly white in our living room.
ThatDirtyOldMan
All the lights in my house are 5K plus. I don't see up to 20" very well and the "brighter" white light makes it easier for me.
MAXRR
Ah, so you are that guy who lights up the whole street with his incandescent pipes.
sirfanciesadrought
Fuck that guy
stulfer
Jesus that's to bright that makes youe home feel like an office space, sounds dystopian
ZeldaHyruleGold
Dimmers my friend, smart bulbs can dim themselves if you don't have a switch, the blue glow at 25% looks really nice for bed.
OnePanMan
Right? There’s a flat in our block and it looks like a fucking hospital. I can’t believe how many neutral whites people there are!
GarmBlack
I guess to each their own. I feel like the "warm" lighting just tints everything weirdly and makes it all look... bleh.
Uniacker40
I'm the same. I just keep the lumens down on the bulbs so it's not too bright.
ShadyVermin
I'm the opposite, I hate cool white, they give me headaches. The yellowy light though, gimme that
B99Reactions
Not sure if cool white is closer to bluelight which causes strains and affects your circadian sleep cycle or something
ShadyVermin
Not sure, it's possible I suppose? I'm no light expert, but that makes sense to me.
sangatster
Have you considered switching to all candlelight? That some yellow stuff right there.
ShadyVermin
Love me some candles
alwayslovedafilm
Meanwhile I use bulbs in the 2700k range because the higher intensity exacerbate some light sensitivity issues and can trigger my migraines.
AllGloryToTheDarkLord
The super (redshifted) Yellowy light is easier on your eyes for sudden night-to day transitions like needing to pee at night.
cirtap
My bathroom lights are set to 3k @ 10% power after 1130pm, then automatically go back to manual mode at 9am.
JustChargeYourDamnPhone
Multicolor motion activated night lights to pee by. Turns on when I walk in and off mud stream but gives aim time!
GarmBlack
Makes sense, but I still hate how it looks. It's just... so unappealing to me.
AllGloryToTheDarkLord
Fun Fact: your phone does the same thing in night-saver mode. It "redshifts" to a lower more yellow tint to protect your night-vision.
GreyKnightTemplar666
You don't have your home memorized enough to walk in pitch black to pee?
davebeastly
I'm also a master of ninjshitsu.
idontwanadothispart
My boyfriend broke his leg doing that while drunk
WaterUnderTheRocketAppliances
Amateur
CatatonicCowMoo
How? Gotta know the story. (Sorry bout your boyfriend)
idontwanadothispart
Tripped on the bathroom rug somehow
riceisdelicious
Wait... You guys get up to pee?
GreyKnightTemplar666
Waterbeds, and I'm don't mean water in the sense normal people do
Smayds
You guys are fucking disgusting and I love every single one of you.
Fuzzwump1
My whole house has daylight bulbs, I can't stand anything less. Soft white bulbs are the worst.
sangatster
Ditto. Started with mini fluorescent then switched to LED when they became available at a reasonable price.
WaterUnderTheRocketAppliances
Same, except for some reason I hate the daylight bulbs for outside stuff and streetlights.
Fuzzwump1
Or as this calls them, "warm light"
Nerdyohyoumeanawesome
I'm the same way! I hate the yellow light.
sirfanciesadrought
It's the opposite for me. Although I don't like yellow bulbs. See, it's mostly not the colour that you hate, it's the lack of brilliance. 1/
sirfanciesadrought
You might have noticed how dim light looks amazing in bars, lounges, hotel lobbies compared to what people have at home.