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HTTP/2 301
location: https://www.joedolson.com/tools/color-contrast-tester.php
content-length: 264
content-type: text/html; charset=iso-8859-1
date: Fri, 10 Oct 2025 08:15:44 GMT
server: Apache
HTTP/1.1 302 Found
Date: Fri, 10 Oct 2025 08:15:44 GMT
Server: Apache
Location: https://www.joedolson.com/tools/color-contrast-tester.php
Content-Length: 241
Content-Type: text/html; charset=iso-8859-1
HTTP/2 200
x-powered-by: PHP/8.2.29
vary: Accept-Encoding
content-encoding: gzip
content-length: 1416
content-type: text/html
date: Fri, 10 Oct 2025 08:15:44 GMT
server: Apache
Color Contrast Spectrum Tester, by Joseph C Dolson
This test allows you to see a spectrum of color combinations with a color of your choice. The spectrum is sorted into groups which pass or fail the color contrast tests specified in the Web Content Accessibility Guidelines (WCAG) versions 1 and 2.
Please submit a color to test against.
Translations
- Ke-Huan “Jedi” Lin — Traditional Chinese (Jedi Blog)
- Carlos Alfonso — Portuguese (No web site provided.)
- Aurélien Levy — French (fairytells)
- Marjolein Katsma — Dutch (Marjolein Katsma)
« Color Contrast Article | Two-color Comparison | Accessible Design Blog | Joe Dolson Accessible Web Design