Luminosity, light colour and creating different effects: everything you need to know about LED lights

LED lights are robust, durable, energy-efficient, powerful, produce low-emissions and are becoming more affordable. LED bulbs to provide better luminosity and last much longer than standard incandescent light bulbs, halogen and energy-saving light bulbs. Here are some key things to consider when buying an LED light.

Lumens instead of watts
Luminous flux is one of the most important factors when it comes to light bulbs. The higher the lumen value, the brighter the light bulb will shine. When we compare LEDs to standard lighting values, an incandescent lamp of 25 watts corresponds roughly to an LED with 215 to 230 lm, 40 watts corresponds to 410 to 430 lm, 60 watts would be 700 to 750 lm and 75 watts 910 to 970 lm.

Another advantage of LED lights compared to standard lighting is the ability to control the phase angle. LEDs usually can’t be dimmed but we’ve highlighted several ways that you can still create different lighting moods.

Spotlights vs. large-area illumination
Depending on how you want to use your lighting and the effect you want to create, the angle and light intensity can be choosed  accordingly. This component is measured in candela (cd). So, if you want to light specific areas of the room, we‘d recommend a beam angle of 30 degrees, so that a narrow cone of light is created. The larger the opening angle, the better for larger rooms. Good illumination can be achieved with an angle of over 100 degrees.

Deceptively real colours
For the naturalness of light, the Ra value is crucial – the higher this is, the better. You can achieve good colour rendering properties with LED lights with a Ra value of 80 or above. For higher demands, a Ra value of 90 is recommended. Shop owners, designers or make-up artists can achieve an illumination that is as close as possible to natural daylight. The maximum Ra of 100, however, is best achieved by using halogen lamps.

Kelvin – The right light for every application
Another important factor is the colour temperature, which is measured in Kelvin. The white light of the LEDs may have different tints since not all frequencies of natural light are contained in the bulb. How warm (reddish) or cold (bluish) the LED light is determined by the Kelvin value.

The colours perceived as warm have a low colour temperature, whereas the cool colours have a high temperature. In principle, the cooler the light, the more stimulating it is, while warm white light stimulates our body to produce the sleep hormone melatonin. The Kelvin value is therefore essential to know when choosing the right type of light for different spaces.

Remote-controlled RGB lamps and Smart LEDs allow you to adjust the light colour according to your mood. Additionally, you can also choose different variations of white coloured lights for each LED light bulb to suit your needs. The Kelvin value of the lights ranges from approximately 2700 Kelvin to 6000 Kelvin.

Warm white light, which has yellow and red tones, reminds us of a sunset, so it is best used to create a sense of comfort in the living room or bedroom, for example. Neutral white light looks like the name suggests: here, contrasts and details can be seen more clearly, making them ideal for bathrooms, kitchens or hobby rooms. Daylight lighting is particularly recommended for work environments, as the higher blue content promotes concentration.

The light colours and our application recommendations at a glance.


Cool white at 5000K and more:
LEDs with this value are perceived as stimulating and cool. In these environments, it’s easier for us to concentrate. This light colour is perfect for offices, study areas, displays or hospital rooms.

Cold white at 4000K:
This value seems cool to us like the moonlight, yet it has an inviting and largely neutral effect on us – ideal for corridors, bathrooms, hobby rooms or, in the business sector, doctors’ surgeries.

Warm white at 3000K:
The typical value of a halogen lamp, this light looks homely to us. Unobtrusive and ideal for brighter home lighting.

Warm white at 2700K:
This type of light is produced by old 60-watt lightbulbs, so is quite familiar. The LED gives us a comfortable light for living rooms and illuminates furniture.

Warm white at 1000K:
Candle effect lighting for a subdued ambience can be created in this light colour. It‘s perfect for the living room or bedroom.