I stick to a muted charcoal base with a sharp cobalt accent. The charcoal grounds everything, keeps the room calm, and the cobalt pops as a focal point—like a spotlight that doesn’t scream. Use the charcoal on walls or large furniture, then place cobalt in pillows, a piece of art, or a lamp shade. Keep the contrast crisp; that’s how you get a vibe that feels intentional, not just “chosen at random.”