background · sample · Opus 5.5 · trial 064 of 100

What the model said

`#F5F7FA` — a soft, cool off-white. It's easy on the eyes, gives dark text (e.g. `#1A202C`) strong contrast, and lets white cards or panels stand out subtly against it.

If you want a dark background instead, use `#0F172A` (deep slate navy).