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Trello: calmer dark contrast

Softens dark-mode contrast with muted card and list backgrounds for less eye strain.

Code to copy

/* Calmer, lower-contrast dark cards */
[data-color-mode="dark"] [data-testid="trello-card"],
[data-color-mode="dark"] .list-card {
  background: #21262d !important;
  color: #c9d1d9 !important;
  box-shadow: none !important;
}
[data-color-mode="dark"] [data-testid="list"] {
  background: #161b22 !important;
}

How to use this example

1. Copy the code with the button above.
2. Install JustZix (2 minutes) and open the extension on the target page.
3. Add a new rule matching that page.
4. Paste the code into the rule's CSS panel and save — the effect appears instantly.