Ketra Lighting Systems
Light that behaves naturally — because it’s engineered to.
Ketra, a Lutron brand, is a full-spectrum architectural lighting system designed to reproduce the qualities of natural daylight and high-quality incandescent light with extreme precision. Unlike conventional LED lighting, Ketra dynamically adjusts color temperature, spectrum, and intensity throughout the day — without sacrificing consistency or control.
Old Cove designs Ketra systems as part of a broader architectural lighting strategy, ensuring light supports how spaces are lived in, worked in, and experienced.
What makes Ketra fundamentally different
Most LED systems control brightness.
Ketra controls light quality.
Ketra fixtures produce a continuously tunable spectrum that allows light to:
- Shift naturally from warm to cool
- Maintain color accuracy across all scenes
- Render materials, finishes, and skin tones correctly
- Mimic daylight rhythms without harsh transitions
This is lighting designed to be felt, not noticed.
Why Ketra is specified on high-end projects
Ketra is chosen when:
- Lighting is a core design element
- Materials and finishes must be rendered accurately
- Spaces change purpose throughout the day
- Visual comfort and wellness matter
- Compromise is not acceptable
You’ll find Ketra in:
- Architect-led residences
- High-end renovations
- Design-driven new construction
- Wellness-focused environments
- Spaces where artificial light must feel natural
How Old Cove designs Ketra systems
Ketra’s performance depends almost entirely on how it’s designed, not just the fixture selection. We have trained hard to become Lutron certified Ketra installers.
Our approach includes:
Lighting intent and behavior
- How light should change throughout the day
- How scenes transition, not just activate
- How artificial light supports circadian rhythm without becoming gimmicky
Fixture placement and layering
- Recessed, concealed, and architectural integration
- Layered light strategies that avoid glare
- Consistent behavior across rooms and zones
Control strategy
- Scene logic built around use, not buttons
- Predictable behavior across the property
- Integration with centralized control systems
The result is lighting that feels natural, calm, and intentional — even as conditions change.
Ketra within a larger lighting ecosystem
Ketra is most powerful when deployed as part of a cohesive system, not in isolation.
Old Cove typically integrates Ketra with:
- Lutron HomeWorks automation for centralized control
- Architectural keypads and minimal interfaces
- Automated shading and daylight control
- Rania light fixtures
- Whole-home and estate-scale lighting logic
This allows Ketra to behave as part of an intelligent environment rather than a collection of fixtures.
Who Ketra is ideal for
Ketra is an excellent fit for:
- Clients who value lighting quality over quantity
- Architect-driven projects
- Design-forward residences
- Wellness-oriented spaces
- High-end residential
- Homes where lighting materially affects comfort and perception
Who it’s not for
Ketra is not intended for:
- Budget-driven projects
- Decorative lighting without architectural intent
- Simple on/off lighting requirements
There are simpler systems for those needs.
Why clients trust Old Cove with Ketra
- Experience designing lighting as a system, not a product
- Close collaboration with architects and designers
- Thoughtful control and scene logic
- Conservative engineering that prioritizes comfort
- Lighting that remains relevant as tastes and needs evolve
- Lutron Certified dealers
We design Ketra systems to disappear into the architecture — not announce themselves.
Let’s determine whether Ketra is right for your project
If you’re evaluating Ketra for a residence or architectural project, we’re happy to discuss lighting goals, fixture strategy, and integration considerations before anything is specified.
Ketra FAQs
Ketra is a premium architectural lighting system known for its full dynamic light spectrum, capable of reproducing natural daylight and high-fidelity white light with exceptional accuracy. Unlike standard tunable white LEDs, Ketra dynamically adjusts spectrum, saturation, and intensity to enhance spaces, finishes, and artwork.
Yes — Ketra includes dedicated linear luminaires such as the G2 Linear, LS0 Lightbar Slim, and L4R recessed linear, which deliver beautiful full-spectrum Ketra light in continuous or accent layouts suitable for coves, grazing, ceilings, and architectural runs.
Ketra linears (including G2 Linear and Lightbar Slim) are ideal for:
– Cove lighting with high-quality natural light
– Wall grazing and texture highlighting
– Continuous lines in recessed ceilings
– Undercabinet and accent illumination
These luminaires deliver uniform color and output with precision optical control.
Ketra linears use a full-spectrum light engine capable of extremely broad color temperature ranges and rich natural white performance. While they can produce millions of colors in certain configurations, the lighting quality focus is architectural natural light with accurate color rendering, not hobbyist RGB effects.
Unlike commodity tape lights, Ketra linear luminaires are engineered with advanced optics, full-spectrum light engines, and control integration for dynamic scenes, sun-tracking, and architectural precision — making them suited to feature and experience-driven lighting rather than just accent glow.
Yes — Ketra products (including linears) integrate seamlessly with Lutron HomeWorks, Palladiom, and Forbes & Lomax control systems, enabling scene control, automation, scheduling, and advanced lighting experiences.
Ketra and Rania are both architectural lighting solutions, but they serve different roles within a layered lighting design. Ketra focuses on full-spectrum, experience-driven lighting, offering exceptional color accuracy, natural daylight reproduction, and advanced control for feature areas and visually critical spaces. Rania focuses on high-quality architectural linear lighting, delivering consistent, tunable white illumination ideal for coves, ceilings, and long continuous runs.
In many high-end projects, Ketra is used where lighting quality and visual impact are paramount, while Rania is used to support broader architectural illumination efficiently.
👉 For a detailed breakdown of use cases, performance, and design strategy, see our Ketra vs Rania comparison.
Choose Ketra when lighting quality, color accuracy, seamless control, and architectural impact matter most — for spaces that must look perfect at any time of day or scene.