// a sandbox of 376 sharp tools
Every little generator
you keep googling for.
QR, barcodes, bcrypt hashes for PHP, UUIDs, JWT decoders, color palettes — fast, local, no signup. Search the sandbox and start.
376 results
Color Contrast Checker
Design · tool
Color Contrast Checker
WCAG AA/AAA contrast ratio between text and background.
#0f172a
#ffffff
The quick brown fox
Small body text sample at 14px.
17.85:1
contrast ratio
- ✓ PASS · AA normal text (4.5:1)
- ✓ PASS · AA large text (3:1)
- ✓ PASS · AAA normal text (7:1)
- ✓ PASS · AAA large text (4.5:1)
// about the sandbox
The small utilities you need,
without the ad-walls.
Every generator runs entirely in your browser. Your inputs never leave the page — no servers, no logging, no tracking pixels. Open the tool, get the thing, close the tab.
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