#2f3946 - Biro Blue color

This deep slate-blue gray reads as a cool, muted navy with smoky charcoal undertones and a whisper of green. It feels modern and restrained—suitable for corporate interfaces, dark backgrounds, and elegant exteriors. It provides strong contrast with white or ivory while remaining softer than pure black, and pairs beautifully with warm metallics like copper or brass, amber accents, and pale neutrals. The tone evokes overcast twilight: steady, professional, and quietly sophisticated.