Free online tool for generating random HEX, RGB, and HSL colors instantly
Drawing review and markup platform for architecture, engineering and construction teams
Stage
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Founded
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Based in
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US
Pricing model
Free
Freemium
Pricing
Not given
Desktop license: $89 one-time permanent license for Mac and Windows, includes 1 year of new desktop features. Cloud Free: free tier with 1 workspace, 3 members, 5 documents, 50 AI credits per month. Cloud Pro: $12.50 per user per month (billed annually) with unlimited workspaces, 3 members per works
Key features
Instant random color generation with spacebar shortcut
HEX, RGB, and HSL color code display with 1-click copy
2 to 10 color harmonized palette generator with smart color locking
Export palettes to CSS Variables, SVG, PNG, and shareable URLs
WCAG 2.1 contrast checker with relative luminance calculation
Color of the Day inspiration
Local-first saved palettes storage with zero tracking
Browser sidepanel for inspecting colors and testing contrast
Color Eye Quiz mini-game to test designer skills
Desktop app for Mac and Windows with local PDF markup tools
Cloud-based collaboration with real-time cursor visibility
Calibrated measurement tools for metric and imperial scales
Version history and version control across drawing revisions
Dropbox and Google Drive integration
Collaborative whiteboards for sketching and design exploration
RFI and punch list tracking with file attachments
Support for large multipage construction drawing sets up to 200 MB
Revision bubbles and hatch fills for clear markup annotation
Works on Mac, Windows, iPad and mobile devices in browser
What makes it different
0-latency generation with instant spacebar triggering
Exact conversions across HEX, RGB, HSL with automated WCAG 2.1 contrast metrics
Hyper-focused neutral UI allowing generated hues to take center stage
Free forever with no sign-up required
Built specifically for AEC teams with purpose-built markup and measurement tools
Connects to file storage teams already use without requiring file migration
Collaboration without requiring accounts from contractors and clients
Markup permanently tied to drawings and preserved across revisions
One-time desktop license with no subscription required for local PDF tools
Deta Studio