Palettes, the 60-30-10 rule, wall colors and lighting: the fundamentals that change everything.

The 60-30-10 rule explained simply: 60% dominant color, 30% secondary, 10% accent. The decorator's method to harmonize any room without buying everything new.

10 ready-to-use interior color palettes, with their hex codes, mood and the rooms where they work. Pick your palette before you buy to avoid visual chaos.

How to choose your wall paint colors: the 60-30-10 rule, which wall to paint as an accent, 5 universal combos and the mistakes to avoid.

The complete lighting guide: the 3-source rule per room, exact heights and distances, color temperature in Kelvin, and the lamps worth investing in first.