habitica/website/client/assets/scss/tiers.scss

.tier1 {
  color: #c42870;
}

.tier2 {
  color: #b01515;
}

.tier3 {
  color: #d70e14;
}

.tier4 {
  color: #c24d00;
}

.tier5 {
  color: #9e650f;
}

.tier6 {
  color: #2b8363;
}

.tier7 {
  color: #167e87;
}

.tier8 {
  color: #277eab;
}

.tier9 {
  color: #6133b4;
}

.tierNPC, .npc {
  color: #77f4c7;
  fill: #77f4c7;
  stroke: #005737;
}