Gemini Prompts for Interior Design
A Gemini prompt for interior design works when it names four things: the room and its size, two or three exact materials, where the light comes from, and how the photo is taken. Leave one out and the model chooses for you. The five prompts below follow that pattern, and each is shown with the image it produced.
1. Scandinavian living room
A lived-in Scandinavian living room in a 1930s apartment, pale oak herringbone floor, linen sofa in oatmeal, one black metal floor lamp, a wool rug slightly off-centre, a half-read book on the coffee table. Overcast morning light from two tall windows on the left. Photographed at eye level with a 35mm lens, straight verticals, natural colours, no styling perfection.
The herringbone floor, the black lamp, the off-centre rug and the open book are all there. Naming small untidy details is what makes the room look lived in.
2. Small Japandi bedroom
A small Japandi bedroom, 11 square metres, low oak bed with rumpled off-white linen, one paper pendant lamp, a single branch in a ceramic vase, walls painted #E8E2D6. Late-afternoon sun through a sheer curtain, soft long shadows. Eye-level photo, 28mm lens, slight grain, nothing symmetrical.
The hex code gave a warm off-white wall and the low sun through the curtain is where the prompt put it. The stated 11 square metres reads as a small room, not as an exact size.
3. Dining room in the evening
A mid-century dining room: walnut table for six, mismatched chairs, a brass pendant hung low, walls in deep green #2F4A3C, cream ceiling, oak floor. Evening, only the pendant and one table lamp are on, warm 2700K light, the window shows dusk blue. Shot from the doorway at eye level, 35mm lens.
Asking for only the pendant and one lamp, with dusk in the window, changes the whole mood. The chairs came out mismatched, as asked.
4. Narrow Paris hallway
An entry hallway in a Paris apartment, 1.2 metres wide, old tomette floor tiles, a narrow oak bench, three coats on wall hooks, a round mirror, an umbrella leaning in the corner. Daylight from an open door at the far end. Phone photo, slightly crooked, deep focus, unedited colour.
The tomette floor, the coats and the umbrella in the corner are there, and the phone-photo wording gave a plain, slightly tilted frame.
5. A list of conditions
Make ALL of the following true in one image of a studio apartment living area: the sofa is a two-seater in rust-coloured velvet; the wall behind it is #F2EDE4; the floor is light grey polished concrete; there is EXACTLY one plant, a tall olive tree in a terracotta pot; the window is on the right. Midday daylight, eye-level photo, 35mm lens. Do not include any logos, text or watermarks.
Every condition was met: rust velvet two-seater, concrete floor, exactly one olive tree, window on the right. Writing EXACTLY in capitals for the count is worth keeping.
What these five runs showed
- Materials named precisely (herringbone oak, tomette, rust velvet) come back as written.
- A hex code steers a wall colour better than a colour name.
- The light sentence does the most work: time of day, weather, which lamps are on.
- Small untidy objects are what stop the image looking like a showroom.
- Sizes in square metres are read as small or large, not measured.
Starting from a photo of your own room
A prompt is one way to get an idea on screen. In Styly you start from a photo of your own room, choose the room type and a style, and get a new version of that room to compare with the original.
Try it on a photo of your room
Upload a photo and see your own room restyled. Styly Starter starts with a 7-day free trial.
Try Styly →Questions
What is the best Gemini prompt for interior design?
One that names the room, two or three exact materials, the light and the camera position. The five above are built that way.
Does Gemini understand hex colour codes?
In our runs a hex code gave a wall close to the requested tone. Treat it as a strong hint, not a paint match.
Can Gemini redesign a photo of my own room?
Yes, by uploading the photo and asking for one change at a time while naming what must stay.
Should the prompt be long or short?
Long enough to cover room, materials, light and camera. Extra adjectives such as 'beautiful' or '8K' add nothing.
How these prompts were tested
Each prompt on this page was run once in English and once in French on 5 October 2026 with Google's Gemini 3.1 Flash Image model. The images are those results, resized and otherwise untouched. That is one run per language: the same prompt can return a different image next time, and other tools will answer differently. Where a run went wrong, we say so.