See paint colors on your own walls before you buy
The fastest way to see a paint color on your own walls is to photograph the room and let an AI visualizer re-render the photo in the new color. A good render keeps your lighting, your furniture, and your wall edges, so you are judging the color in the one room that matters. Repaint does this in about a minute per render, for less than the price of a single sample pot.
What a good preview must preserve
Three things make a paint preview trustworthy: the light stays yours, the furniture stays put, and the paint stops at real edges. A tint slider or a bucket-fill tool fails all three: it smears color across trim, shadows, and the sofa alike. The result looks like a filter because it is one.
Repaint’s renders are photorealistic mock-ups of the finished job: the window light still falls the same way across the wall, shadows behave, and trim keeps its own color unless you assign it one. The difference is "roughly that hue" versus "this is what my room will look like next Saturday."
How the photo-to-preview flow works
Snap one photo in the room’s normal daylight. Choose the surfaces to paint: walls only, or walls plus trim, ceiling, doors, or an accent wall. Pick colors from a 144-color designer catalog, and render. A Basic render takes about a minute and costs $0.99; a Deluxe render (about 2.5 minutes, $4.99) is sharp enough for client decks and listing photos.
Because each render is a saved image, you can line up five candidates side by side to compare in the evening, in the morning, on your phone, on the big TV. Sample pots cannot do that.
When you should still buy a sample pot
A preview narrows five candidates to one; a sample pot confirms the one. Sheen, brand-specific pigment, and the exact behavior of your topcoat are physical properties no image fully carries. The working sequence: preview widely, sample once, buy confidently. What the preview eliminates is the $50 weekend of testing colors that were never going to win.
Questions
Do paint visualizer apps work on exteriors?
Repaint is built for interiors: rooms, walls, trim, cabinets, brick. Exterior siding in changing outdoor light is a different problem and generic filters handle it poorly.
How accurate is the color on my phone screen?
Modern phone screens are color-managed and close, but always confirm the finalist with one physical sample under your own lighting before ordering paint.