This is very exciting as we have received our first submitted colour scheme, so thanks to Julie for the following:

#204e77

#a99a89

#7d6488

#5d1f22

#ffaa01
There is just one accessible pairing of colours in this selection:
| 1. #5d1f22 and #ffaa01 |
Example 1.1 |
Example 1.2 |
I would therefore suggest changing the orange for white and maybe lightening the taupe a bit, to give the following:

#204e77

#cfc7bd

#7d6488

#5d1f22

#ffffff
And these accessible combinations:
| 1. #ffffff and #204e77 |
Example 1.1 |
Example 1.2 |
| 2. #ffffff and #7d6488 |
Example 2.1 |
Example 2.2 |
| 3. #ffffff and #5d1f22 |
Example 3.1 |
Example 3.2 |
| 4. #cfc7bd and #204e77 |
Example 4.1 |
Example 4.2 |
| 5. #cfc7bd and #5d1f22 |
Example 5.1 |
Example 5.2 |
Of course there are other ways of increasing the contrast between the suggested colours - instead of bringing in the white I could have chosen a lighter shade of orange so that it would work with the blue. Thanks again for the suggestion, keep them coming!