Task: Present colour palette updates to support high contrast.

[andrew-ronaldson]

[lboehling]

Evaluated color palette for WCAG AAA enhanced contrast ratio [7:1] against our darkest/lightest bkg colors in light and dark theme respectively. See evaluation in this file.

Shared this evaluation with Ansible & Brand teams. Have a meeting on the cal to share with RHDS tomorrow.

Existing palette should work for our global tokens, save green-60 shade. Received approval from the brand to deviate from their palette and use a different shade of green to make the color more accessible for a high-contrast theme.

Updating tokens using the current brand palette (with added accessible, green-65 shade) in the POC/demo page for HC theme to share at summit.