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CLI applications need careful color selection to remain readable across different terminal themes. Testing against popular themes (Basic, Tango, Solarized) reveals that only 11 out of 32 possible color settings work reliably. Solarized's unique 16-color palette mapping causes bright colors to appear gray or invisible. The safest approach is avoiding bright colors (except bright red, green, and cyan), skipping brwhite for emphasis, and being cautious with bold text since some terminals make bold text bright automatically.

How to Choose Colors for Your CLI Applications · Luna’s Blog

<p>A brilliant bit of practical research.</p>
