When choosing an LED lamp or luminaire, it is common to focus on power consumption, wattage or colour temperature. However, there is another important factor that determines lighting quality: CRI (Colour Rendering Index).
CRI measures how accurately a light source reproduces the colours of objects compared with natural daylight. It is measured on a scale from 0 to 100, the higher the value, the more accurately colours are displayed.
Lighting with a high CRI allows colours to appear more natural, balanced and closer to reality. On the other hand, a low CRI light source can affect the appearance of objects, making colours look duller or different from their true tones.
Why is choosing a good CRI important?
The Colour Rendering Index has a direct impact on different environments:
Retail stores and commercial spaces A high CRI helps display products with more accurate colours, making it especially important in clothing stores, furniture shops, decoration stores and food retailers.
Restaurants and hotels
Lighting quality influences the perception of food, materials and the overall atmosphere, creating a more pleasant experience.
Offices and workplaces Good colour rendering contributes to more comfortable and balanced working environments.
Homes In residential spaces, an appropriate CRI allows furniture, walls, decorative objects and other elements to be seen with more natural colours.
What CRI should you choose? As a general guide:
CRI below 80 → limited colour reproduction, suitable for applications where colour accuracy is not a priority.
CRI 80 or above → good lighting quality for most applications.
CRI 90 or above → recommended for spaces where colour accuracy is essential, such as retail stores, galleries, restaurants and architectural projects.
When choosing an LED solution, energy efficiency should not be the only consideration. Light quality is equally important for creating comfortable, functional and visually appealing environments.
At Wattlamp, you will find LED lighting solutions adapted to different needs and applications. Our team will be happy to help you choose the most suitable option for your project.
