A free RGB and HEX paint-color converter for architecture, facades, and design.
Enter a HEX or RGB value to find the perceptually closest color in each supported manufacturer system. Results use CIEDE2000 and show total Delta E plus lightness, chroma, and hue deviations.
- 216 RAL Classic colors
- 796 StoColor System colors
- 360 Herbol Farbe & Architektur colors
- 225 CaparolColor Compact colors
- 500 Caparol Fassade A1 colors
- HEX-to-RAL and RGB-to-RAL matching
- Closest Sto, Herbol, and Caparol alternatives
- CIEDE2000 (Delta E 2000) comparison
- Searchable compact color libraries
- CIE Lab* range filtering
- A/B color comparison
- Facade, roof, and window color-harmony preview
- No account, tracking, or server-side processing
npm install
npm run devRun npm run check for Svelte and TypeScript diagnostics, or npm run build to create a
production build in dist/.
Digital HEX and RGB values are screen approximations. Physical manufacturer samples should be used for binding color decisions.
The StoColorSystem screen values are sourced from
TangibleInc/design-notes-v7-radix
under the MIT license.
The Herbol Farbe & Architektur screen values are sourced from
pgchamberlin/hexover under the MIT license.
Herbol is referenced only to identify the corresponding manufacturer palette; Omnicoco is not
affiliated with or endorsed by Herbol or AkzoNobel.
The CaparolColor Compact screen values are sourced from the public
Kissel Farben palette.
The Caparol Fassade A1 screen values were imported from a manufacturer color-value spreadsheet.
Caparol is referenced only to identify the corresponding manufacturer palette; Omnicoco is not
affiliated with or endorsed by Caparol.