Nutter Tools
Nutter Tools

A free toolbox that runs in your browser. A tool for every job.

Your files never leave your device

Images

  • Convert images
  • Compress images
  • Resize images
  • Crop
  • Watermark

PDF & files

  • Merge PDFs
  • Split a PDF
  • Images to PDF
  • PDF to images
  • Remove photo location

Video & audio

  • Compress video
  • Convert video
  • Video to GIF
  • Convert audio
  • Trim audio

Everyday

  • QR codes
  • Passwords
  • Time zones
  • Unit converter
  • Word count
  • Webcam test

Developer

  • JSON formatter
  • Base64
  • Regex tester
  • Hashes
  • JWT decoder

Site

  • About
  • Contact
  • Settings
  • Privacy
  • Terms
  • Site map
  • llms.txt

Everyday

  • Images
  • Video
  • Audio
  • PDF & files
  • Text
  • QR codes
  • Units & math
  • Time & dates
  • Color
  • Passwords & IDs
  • Device tests
  • Sun & moon

For developers

  • JSON
  • Encoding
  • Regex & cron
  • Web & auth
  • Hashing & encryption
  • Config files
  • Network
  • Browser
  • AI
  • Fake data
© Nutter Toolsnutter.tools
  1. Home
  2. Color
  3. Contrast matrix
Your files stay on your device

Contrast matrix

Check every colour pair in a palette against WCAG 2.2 thresholds at once, including states and translucent colours.

This tool is in beta

Still being tested. If a result looks wrong, tell us.

Report a problem

Paste a palette on each side and the matrix fills in.

Palette

One per line as Name: colour. Tag a line [large], [ui], or [disabled]. Up to 40.
Same format, up to 40.
Untagged lines are
More settings▾
px

Large text is at least 24px, or 18.66px when bold.

Suggest fixes to reach

Recalculated as you type, entirely in this tab. Ratios round down to two decimals, so what you see is never better than the real number.

More color tools

  • Contrast checker
  • Color converter & contrast
  • Color palette generator
All color tools

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