Led bulb colour scheme | Blog home-of-led.co.uk
Colour temperature in lighting describes how the colour of the light appears from a lamp, measured in kelvins (K). If you like the traditional yellowish colour of a conventional lamp then warm white around (2900-3300K ) would be the ideal choice, this is the most popular choice for homes. If you want a modern, clean look, you may prefer the cleaner, brighter feel of a cool white lamp (5500-6500K). Basically the higher the colour temperature of LED bulb, the “cooler” a lamp will look.
Choosing a right colour will set the mood of your space. You can choose warm white colour for living room, bedroom or hallway and cool white will work out well in kitchen, study, bathroom, office, retail etc. You can also mix and match. For example, many people will find a formal dining room more appealing with "warmer" appearing light, while for a large, open-plan office "neutral to cool white" appearing light is the better choice.
WARM WHITE LED BULB
The key part of this colour is in the name, looking at the part that says “Warm” gives away what you can expect to see from the colour. “Warm” means the colour you will get is a softer colour which has a hint of red to it. When lit it has a “Warm” feeling to it that mimics a daylight colour (this is the colour most 60w incandescent bulbs omit), measuring this light on the Kelvin scale it is in the range of 2800-3200K. This colour is mostly used in the home lighting the bedrooms and living rooms
COOL WHITE (DAYLIGHT) LED BULB
As with Warm White, the “Cool” part also gives you an idea of what you can expect from this colour. With Cool White you will be getting a much brighter clear colour, think of the lighting in a hospital, or a professional kitchen, where you need clear bright light in order to see what you are doing. Measuring this light on the Kelvin scale you will find it in the range of 5000-6500K area. This light has a slight blue tint to it and is usually found in professional working areas and kitchens.
NATURAL WHITE (NEUTRAL) LED BULB
Natural white is the colour that sits in the middle of the Warm White and Cool White placing itself on the Kelvin scale between 3600 - 4800K. This colour is a white light that doesn’t suffer from other colours bleeding into it such as red or blue. Natural light is the perfect balance of warm and cool light. Bulbs in this temperature zone give good colour rendition, recommended in areas where tasks are done, such as kitchen or home office. It can be also used in commercial areas.
LED colour temperature chart
The CRI (Colour Rendering Index) of a LED lightbulb is important, especially in retail or some industrial applications. CR is a measure of the ability of a light source to accurately represent different colours. Put simply, you want to make sure you get a bulb that makes your tomatoes look red, rather than a strange orangey colour. Traditional incandescent and halogen bulbs are near perfect and score in the high 90s. LEDs are a little behind this and are more likely to have a CRI value in the mid 80s.