Nof Go is a minimal, open-source color palette generator whose entire code fits within a single HTML file, allowing users to generate harmonious color schemes with real-time contrast ratio feedback.
What is Nof Go?
Nof Go is a lightweight color palette generator built as a single HTML file. It takes a base color in HEX format and produces multiple harmonious color schemes (Analogous, Triad, Complementary, Split Complementary, Square, Tetradic, and Monochromatic) along with their contrast ratios against the base color. The tool runs entirely in the browser with no server dependencies. It is developed by Northstrix and hosted on GitHub and SourceForge. You can try it directly at northstrix.github.io/nof-go.
Key Features
- Single-file architecture — The entire application is contained in one HTML file, making it easy to download and run offline without any build process.
- Color harmony modes — Offers seven harmony modes: Analogous, Triad, Complementary, Split Complementary, Square, Tetradic, and Monochromatic, covering common color theory relationships.
- Accessibility-first contrast display — Each generated color shows a contrast ratio against the base color and indicates whether it meets WCAG AA or AAA standards.
- Real-time HEX input — Type a hex color directly or use the built-in color picker to select a base color; the palette updates instantly.
- Open source with full credits — The code is freely available on GitHub and SourceForge, and the page transparently credits every library and inspiration used.
- No external server required — Since it's a single HTML file with inline scripts and styles, it works offline once downloaded.
Who is it for?
- Web designers — Quickly test color harmonies and ensure chosen colors meet accessibility contrast thresholds (AA/AAA) before finalizing a design.
- Front-end developers — Use the lightweight tool to generate accessible color variables for CSS or design tokens without installing any software.
- Color theory learners — Experiment with different harmony modes to understand how analogous, complementary, and other schemes relate to a base color.
What can you do with Nof Go?
- Generate accessible palettes — Enter a brand color and see which complementary or analogous colors pass WCAG AA/AAA contrast levels.
- Export color ideas for a project — Use the displayed hex values directly in CSS or design tools.
- Explore color relationships — Switch between harmony modes to compare how the same base color interacts with different theoretical schemes.
How does Nof Go work?
- Enter a base color in HEX format (e.g.,
#00FAD5) using the text input or color picker. - Select a color harmony mode from the available options.
- The tool instantly calculates and displays several harmonious colors, each with its contrast ratio against the base color and an AA/AAA accessibility label.
