alphagov/govuk_frontend_toolkit — pull request #105 by tombye (2014-04-23 15:51:17+00:00)
Title: Improve contrast ratio of text colour for the phase banner

The $text-colour of black did not pass the contrast requirements for AA when displayed on either the Alpha or Beta banner colours.

$text-colour was also intended primarily for text on a white background, to make a version of black with a softer contrast. Orange and pink require a harder contrast so `#000000` is more appropriate.