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jayden@mdt.id.au +61 431 149 567 LinkedIn GitHub Google Business ProfileCanberra, ACT, Australia7:00 am – 7:00 pm (Mon–Sun)

© 2026 MDT Software Development · Jayden MarquardtPrivacy

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Tools
Colour Contrast Checker

Colour Contrast Checker

Check the contrast ratio between text and background colours against WCAG AA and AAA for normal and large text.

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More dev utilities

CSV to JSON
Convert CSV spreadsheets to JSON and JSON back to CSV, for moving data between apps, APIs and spreadsheets.
Open tool
UUID Generator
Generate unique UUIDs for database records, session tokens, and more.
Open tool
JSON Validator & Formatter
Validate JSON, format it for reading or minify it for production, instantly in your browser.
Open tool

Let’s build something amazing.

Have a project idea or need expert guidance? One message, one engineer, no account manager.

jayden@mdt.id.au
·
+61 431 149 567
·
7:00 am – 7:00 pm (Mon–Sun)

Foreground colour

#000000

Background colour

#ffffff

Live Preview Text

Contrast ratio 21:1

✅ AAA