Tools, accounts, and QR codes
0.2.0 · 2026-05-24 · minor
400.dev grew from a single tool into a small suite — a Color tool with 31,900 named colors, QR codes for your links, personal accounts with display handles, your Saved Artifacts in one place, a tools home, a public status page, and safer link sharing.
Apps: link, qr, color, account, platform
Categories: added, improved, security
- Color tool — 31,900 named colors Look up any color by name or hex. Each color gets a full page: every code (HEX, RGB, HSL, OKLCH, CMYK, LAB), contrast checks, harmonies, tints and shades, color-blindness previews, its color family, and the nearest named colors. Save colors to your account.
- Your Saved Artifacts, on your account Everything you've made across tools — links, QR codes, and saved colors — now lives on your account page, grouped by app, newest first, with search.
- QR codes for any link Generate a QR code for any saved link, customize its colors, and download it as an image. Scans are counted separately from clicks.
- Your account and display handle Every signed-in person now has an account page to set a unique lowercase display handle and an avatar, with instant availability checks and suggested alternatives when a name is taken.
- Find your tools fast The tools home now shows your favorites and recently used tools, plus a unified search across everything available to you.
- Create your own external links Members with a verified email can now shorten external destinations, not just internal ones, with sensible monthly limits.
- Public status page A live status page at status.400.dev shows current uptime and any active incidents.
- Stronger link safety New external destinations are screened against known threats, re-checked over time, and can be reported and taken down quickly.