Non-TiD/XiD user, agency partner or vendor? Access guidelines and assets
TPG Colour Contrast Analyser

Colour contrast is important because many people cannot distinguish differences in colour if the contrast is not sufficient. The Colour Contrast Analyser (CCA) is a tool that helps you determine the legibility of text and the contrast of visual elements, such as graphical controls and visual indicators.

How to use

The Colour Contrast Analyser features WCAG 2.1 compliance indicators, support for alpha transparency on foreground colours, a colour blindness simulator, and three  ways to set colours:

  • Raw text entry (accepts any valid CSS colour format)

  • RGB sliders

  • Colour picker (Windows and macOS only)

After installing the Colour Contrast Analyser, you can learn how to use the tool by

.

How to access

You can download and install either a Windows or MacOS version of the Colour Contrast Analyser.

The TELUS team acknowledges that our work spans many Territories and Treaty areas and we are grateful for the traditional Knowledge Keepers and Elders who are with us today, those who have gone before us and the youth that inspire us. We recognize the land and the benefits it provides all of us, as an act of Reconciliation, as recommended by the Truth and Reconciliation Commission’s (TRC) 94 Calls to Action and gratitude to those whose territory we reside on, work on or are visiting. Learn more about TELUS’ commitments to Reconciliation.
facebook
twitter
instagram
linkedIn
youtube
©2025 TELUS
Terms and conditions