🏠 Home 🎨 Curated Palettes (400+) ⚡ 100,000+ Colors Matrix đŸ–ŧī¸ Extract Colors from Image ✨ Palette Studio 🌈 Tailwind Shades (50-950) đŸ”Ŧ HEX Color Inspector 🔄 Color Code Converter đŸ‘ī¸ WCAG Contrast Checker 📚 Design Guides Hub 📰 Design & Color Blog â„šī¸ About Us âœ‰ī¸ Contact Support
Direct Human Support â€ĸ No Bots

Contact Founder & Get Support

Need help, spotted a contrast calculation bug, or want to suggest a new color theme? Reach out directly via email. Every message is personally read and answered.

Direct Founder Inbox

Get in Touch via Email

We prefer direct email over unreliable contact forms. You will get a genuine, thoughtful reply from the person actually building and maintaining this website.

PJ
Made by Prem Jagdale
Founder of UIColorBlocks â€ĸ Founded 2026

UIColorBlocks was founded by Prem Jagdale, frontend developer and designer who is passionate about colors. Prem runs UIColorBlocks since 2026 with the goal of sharing that passion with the world, and provide a handy resource for designers and developers.

"I personally check and reply to all emails within 24 to 48 hours."

🐛 Reporting a Bug

If you encounter an issue with one of our tools, including these details helps us fix it quickly:

  • The tool or page URL (e.g. /shades or /contrast-guide)
  • Your browser name & operating system
  • The specific HEX code or action that caused the issue

🎨 Suggesting a Palette Theme

Looking for a specific UI aesthetic not yet in our 400+ curated database? Tell us:

  • The mood or industry (e.g., Solar Energy Dashboard, Cyberpunk UI, Luxury Minimal)
  • Desired primary anchor color or sample HEX

âąī¸ Response Time Expectation

UIColorBlocks is an independent web tool. Inquiries are handled personally by Prem Jagdale. Critical bugs are typically acknowledged within 24 hours.

Frequently Asked Questions

Can I use these palettes in commercial apps?
Yes, absolutely. All color palettes, Tailwind tokens, and CSS variables generated on UIColorBlocks are 100% free for both personal and commercial use without attribution.
Are images uploaded when extracting colors?
No. Our Extract from Image tool is 100% client-side. Images are processed locally in your browser's HTML5 Canvas element and are never uploaded to any server.
How are contrast ratios calculated?
We use the official W3C WCAG 2.1 relative luminance algorithm: (L1 + 0.05) / (L2 + 0.05), ensuring exact compliance standards for AA and AAA thresholds.
Do you plan to keep UIColorBlocks free?
Yes. UIColorBlocks is designed as an open-web resource for designers and developers. There are no paywalls, accounts, or subscriptions required.