View source for User:Ground/Official prime color scheme

{| class="wikitable"
|+ - and + refer to flat and sharp straddle primes. - is the default.
|-
! Prime !! - !! +
|-
| 2 || colspan="2" | Colorless
|-
| 3 || style="background-color:#aaa" | Gray || style="background-color:#ccb" | Beige
|-
| 5 || style="background-color:#c30" | Red || style="background-color:#c06" | Rose
|-
| 7 || style="background-color:#06f" | Blue || style="background-color:#60f" | Violet
|-
| 11 || colspan="2" style="background-color:#cc0" | Yellow
|-
| 13 || colspan="2" style="background-color:#090" | Green
|-
| 17 || colspan="2" style="background-color:#90f" | Purple
|-
| 19 || colspan="2" style="background-color:#099" | Teal
|}