Updated colour for Email button

[data-sync-user]

From https://mozilla-hub.atlassian.net/browse/MOFOTP-409 :

Request description

Hi and Happy New Year!

During our EOY it was discovered we had been using an unaccessible green for our fundraising buttons. Now that we are aware this colour no longer passed a colour contrast test we are looking for a new colour that is close to our old green but accessible.

The old background colour was: #2CC98E with white text.
I did have a green that did pass (AA normal text AAA large text) #0F8558.

We would like to be able to test the colours out, if there are options that could be provided.

Happy to provide any additional information as needed

Timeline

January 15

┆Issue is synchronized with this Jira Story

[data-sync-user]

➤ Nancy Tran commented:

I setup a page in Figma ( https://www.figma.com/design/XFShf6u1arpZsWprZjomHx/Email-Templates?node-id=3249-1205&t=uXjeD5pCwTz2pND6-1 ) to explore some accessible greens in our design system. Brandon will share it back with his team and will decide which ones to test.