Exterior & Interior Color Simulator + Contrast Checker

Upload a photo to compare exterior, interior, signage, and UI-style recoloring on the spot.

Built-in checks for 4.5:1 normal text, 3:1 large text, and 3:1 UI elements help your proposal land better.

Photos stay in the browser Overlay signage, text, and UI mockups Instant 4.5:1 / 3:1 checks

How to use

  1. Upload a facade or interior photo.
  2. Choose a scene and adjust the main and accent colors.
  3. Enter headline, body copy, and button text to check signage and UI mockups.
  4. Review contrast, then use PNG/JPEG export or the share URL in your proposal.

Where it helps

Facade and roof comparisons

Layer colors over site photos to compare facade, roof, and trim choices quickly.

Interior proposals

Show meeting rooms, receptions, and lounge spaces with a photo-based color study.

Signage and directory boards

Check how text color and background color work together before you present.

UI-style previews

Turn proposal cards and buttons into clean UI mockups that are easier to review.

Contrast standards

Normal text 4.5:1

Use this as the baseline for body copy and other small text.

Large text 3:1

Use 3:1 for headings and larger text to confirm readable contrast.

UI elements 3:1

Use 3:1 for buttons, borders, and icons to make differences obvious.

Notes

  • Photos and typed copy are used only on this device.
  • Real paint colors shift with lighting, substrate, and materials, so always confirm with physical samples before the final decision.
  • The contrast check follows the WCAG formula and is meant as a proposal-stage guide. Follow legal or internal standards first when they exist.

FAQ

Are photos sent to a server?

No. Uploaded photos are processed entirely in the browser.

Do the share URLs include photos or typed text?

No. Share URLs only include the scene, colors, and display settings.

Can I use it for both exterior and interior work?

Yes. Switch scenes to review facades, interiors, signage, and UI-style layouts.

Does the contrast checker replace an accessibility audit?

No. It is a proposal-stage guide. Please run formal audits and follow your own standards separately.