Most homes are lit by a fixed shade of white — the same flat light at 7 AM as at 10 PM. Ketra, Lutron’s full-spectrum lighting platform, changes that. It recreates the qualities of natural daylight indoors, shifting warmth and intensity throughout the day the way the sun does. For luxury homes in Miami and South Florida, it has become the reference standard for lighting that flatters architecture, art, and the people living with it.
What is Ketra lighting?
Ketra is a tunable, full-spectrum LED lighting system engineered by Lutron. Instead of relying on standard white LEDs, each Ketra source mixes color internally to produce white light that spans roughly 1,400K to 10,000K — from candlelight-warm to crisp daylight — plus a palette of 16.7 million colors.
Because Ketra was designed from the ground up to work natively with Lutron’s control systems (the same platform behind Lutron shades and keypads), the lighting, shading, and controls behave as one system rather than separate products layered together. That matters in practice: scenes are smooth, dimming is flawless down to a warm glow, and every fixture in a room renders the same color of white.
How does Ketra support your circadian rhythm?
Ketra automatically shifts its color temperature and intensity throughout the day to track natural daylight — energizing, cooler light in the morning and progressively warmer, dimmer light in the evening. Your body’s internal clock takes cues from light; evening exposure to cool, bright light is associated with suppressed melatonin and poorer sleep, which is why “human-centric” lighting has moved from spas and wellness resorts into residences.
With Ketra, this happens without anyone touching a keypad. The system knows the time and adjusts silently in the background — you simply notice that the house feels right at every hour.
What makes Ketra different from other “tunable white” lighting?
Three things separate Ketra from typical tunable-white LEDs:
- Range and accuracy. Most tunable fixtures cover roughly 2,700K–5,000K. Ketra spans about 1,400K–10,000K, and its patented Color Lock technology continuously self-corrects each source, so fixtures don’t drift apart in color as they age. Ketra’s A20 lamp is rated for 50,000 hours with continuous Color Lock correction.
- Vibrancy control. Ketra offers a “third dial” beyond intensity and color temperature: Vibrancy remixes the balance of red, green, and blue to change how the light renders colors — making artwork, stone, and wood finishes appear richer — without changing the color of the light itself. Interior designers use it the way a photographer uses saturation.
- One ecosystem. Ketra is part of Lutron’s Intelligent Lighting portfolio (expanded in 2026 alongside the Orluna family), so it’s specified, controlled, and serviced within a single system — not a patchwork of apps and drivers.
Where does Ketra make the biggest difference in a home?
Anywhere light touches something you care about. In our Miami projects, the highest-impact spaces are: primary suites and bathrooms (gentle wake-up and wind-down scenes), art walls and galleries (Vibrancy makes pigments pop without UV-heavy accent lamps), kitchens and baths (accurate skin tones and true whites), wine rooms and bars (warm, dramatic evening scenes), and outdoor living areas that transition from daylight to entertaining light.
Ketra’s product family covers whole-home applications: 2-inch and 3-inch downlights (including remodeler versions for finished ceilings), A20 lamps that retrofit into existing decorative fixtures, PAR lamps for track and accent lighting, and linear fixtures for coves and architectural details. That means an existing home can adopt Ketra room by room — it isn’t only for new construction.
Is Ketra worth it?
Ketra is a premium system, and it’s priced like one. The honest answer: if you’ve invested in architecture, interiors, or art, lighting is the layer that determines how all of it actually looks — and Ketra is the most capable residential lighting source available today. Clients rarely describe it in specs afterward; they say the house feels calmer at night and the finishes look the way the designer intended.
Because pricing depends on fixture counts, ceiling conditions, and controls, the practical first step is a lighting design conversation, not a catalog.
Where can you experience Ketra in person?
You can see Ketra live in ioty’s showrooms in the Miami Design District and Doral. Tunable light is something specs can’t convey — the difference between reading about Vibrancy and watching a wall of art change character in front of you is the whole argument. Walk through morning-to-evening scenes, compare color temperatures side by side, and see how Ketra pairs with Lutron shades and controls in a real environment. Homeowners, designers, and architects are all welcome; a visit takes about half an hour and is the fastest way to understand what full-spectrum light does for a space.
Frequently asked questions
Is Ketra owned by Lutron?
Yes. Lutron acquired Ketra in 2018, and Ketra is now the flagship of Lutron’s Intelligent Lighting portfolio, fully integrated with Lutron controls and shades.
Can Ketra be added to an existing home?
Yes. A20 lamps screw into standard sockets in existing fixtures, and remodeler downlights install in finished ceilings — so many South Florida homes adopt Ketra during a renovation or even room by room.
What color temperature range does Ketra produce?
Approximately 1,400K to 10,000K white light, plus 16.7 million saturated colors for accent and entertaining scenes.
Does tunable lighting really affect sleep?
Light is the primary cue for your circadian rhythm. Warm, dim evening light and brighter morning light support your body’s natural melatonin cycle; Ketra automates that shift throughout the day.
Does Ketra work with shades and the rest of a smart home?
Yes — natively with Lutron’s control and shading systems, which ioty designs and installs as one integrated package, alongside audio, video, and networking.
Who installs and services Ketra in Miami?
Ketra is sold and installed through certified dealers. ioty is a Lutron and Ketra dealer serving Miami and South Florida, with in-house lighting design and 24/7 service.
Where can I see Ketra lighting in person?
ioty has working Ketra displays in its Miami Design District and Doral showrooms, where you can experience tunable light, Vibrancy, and Lutron shading together before specifying it for your home.
The best way to understand Ketra is to stand in it.
Visit ioty’s showrooms in the Miami Design District or Doral to experience tunable, full-spectrum light in person — or contact ioty to schedule a lighting design consultation for your home in Miami or South Florida.