Free online CMYK to Pantone color converter and color reference tools
A native macOS drawing app for quick sketches, screenshot markup, and AI-generated diagrams
Stage
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Founded
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Based in
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Pricing model
Free
Freemium
Pricing
Not given
Free: $0 forever, includes all drawing tools, unlimited sketches in one folder, copy to clipboard as PNG, and auto-save with local-first storage. Pro: coming soon.
Key features
CMYK to HEX converter
CMYK to RGB converter
Pantone to CMYK converter
HEX to CMYK converter
RGB to CMYK converter
Pantone color finder and search
Color reference charts by family
Browser-based with no registration required
Educational guides on CMYK and Pantone
Instant copy-to-clipboard as PNG
No accounts or setup required
Local-first storage with auto-save
Screenshot annotation with arrows, boxes, text, and freehand tools
AI diagram generation via Claude, Cursor, Windsurf, and VS Code
Refine diagrams through chat
Paste screenshot from clipboard
Unlimited sketches in one folder
Native macOS performance
All drawing tools included in free version
What makes it different
Approximate conversions between two fundamentally different color systems
Runs entirely in browser without data transmission to servers
Comprehensive color reference charts and multiple conversion formats
Plain-English educational content for designers and printers
Emphasis on verification with physical swatches for production use
Zero-friction design: open, draw, and share in seconds with no setup or accounts
Local-first architecture: all sketches stay on your Mac, nothing leaves unless you ask
AI integration runs through your own subscription with no proxying of prompts
CMYK2Pantone
Chalk