Flat Night UI palette

Flat Night is a moody, modern UI palette built on deep slate-blue backgrounds and slightly lighter slate surfaces that maintain low-contrast serenity. Bright teal offers a cool, confident primary accent, while vivid emerald-green serves as a fresh success indicator. Warm amber provides energetic call-to-action emphasis and subtle highlights. Together these colors create clear visual hierarchy and high legibility for night modes: reserve the darkest tones for backgrounds, the mid-slate for cards and panels, teal for primary controls, green for confirmations, and amber for warnings or CTAs.