Lighting Temperature: KELVINS in Action
- Gateway Colours

- Nov 1
- 3 min read

Have you ever painted a room a beautiful shade of blue, only to find it looks completely different once your lights are on at night? Or perhaps your warm beige walls suddenly appear a little… dingy? The culprit isn't your paint choice, but rather the hidden science of lighting temperature, measured in Kelvins (K). Understanding the Kelvin scale is a game-changer for anyone looking to perfect their home's ambiance and ensure their paint colours truly shine.
The Kelvin Scale Explained: More Than Just Brightness
While lumens measure how bright a bulb is, Kelvins tell us about the colour of the light it emits. The Kelvin scale ranges from very warm, almost orange light at the lower end, to very cool, bluish light at the higher end.
$2000K - 2400K$: Think candlelight or a very dim, antique Edison bulb. Extremely warm and intimate.
$2700K - 3000K$: This is your standard "warm white" or "soft white" found in most homes.
$3500K - 4500K$: Often labeled "neutral white" or "cool white," this range mimics natural daylight.
$5000K - 6500K+$: Referred to as "daylight" or "cool daylight," this is a very bright, sometimes bluish-white light.
Let's break down how different Kelvin temperatures interact with your paint colours.
Warm Light: $2700K - 3000K$
When you want a cozy, inviting atmosphere, warm light is your best friend. This range enhances reds, oranges, yellows, and warm browns, making them appear richer and more vibrant. Imagine a rustic living room with deep terracotta walls – warm light will bring out their earthy beauty.
However, be mindful that warm light can make cool colours (like blues, greens, and greys) look a bit dull, muted, or even greenish. A crisp navy blue wall might lose its vibrancy and appear somewhat flat under warm illumination. This makes warm light ideal for:
Bedrooms
Living Rooms
Dining Rooms
Any space where relaxation and comfort are key.
Here's an example of a room bathed in warm, inviting light:

Neutral/Daylight: $3500K - 4500K$
This range is the Goldilocks of lighting – not too warm, not too cool, but just right. Neutral light offers the most "true colour" representation, meaning your paint colours will look very similar to how they appear in natural daylight. This makes it an excellent choice for:
Kitchens: Crucial for seeing the true colour of your ingredients while cooking.
Bathrooms: Ideal for applying makeup accurately or getting a true sense of your outfit's colours.
Home Offices/Workspaces: Reduces eye strain and keeps you alert during tasks.
Art Studios: Where accurate colour perception is paramount.
If you're unsure which temperature to choose, a neutral white is often a safe and versatile bet, especially in active areas of the home.

Cool Light: $5000K+$
Stepping into the $5000K+$ range brings us into very cool, bright, and sometimes bluish light. While excellent for tasks requiring high visibility, like intricate workbench projects, it's generally not recommended for living spaces. Cool light can make warm-toned paints look surprisingly dull, grey, or even sickly. A vibrant yellow might appear washed out, and a warm beige could take on an unappealing greyish cast.
Cool light is best suited for:
Garages and Workshops
Commercial Spaces
Basements
Utility Rooms
Security Lighting
Here's a depiction of a garage with bright, cool lighting:

Actionable Tip: Sample, Sample, Sample!
The most crucial advice when choosing paint colours and lighting is this: Always sample paint colours under the light temperature you plan to use in that room. What looks perfect in the store or under natural daylight might be drastically different once your light fixtures are installed and illuminated. Grab a few bulbs of different Kelvin temperatures, paint large swatches on your wall, and observe them at various times of day and night. This simple step can save you from costly repainting and ensure your home's colours always look their best.
By understanding the Kelvin scale, you're not just buying a light bulb; you're choosing an atmosphere, enhancing your decor, and making your home truly shine!
Get in touch with Gateway Colours today to find the perfect colour palette for your lighting restraints!




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