Black can make areas look dull or lifeless because it lacks the color complexity you get from mixing your own darks.
When you mix black with bright colors, the result can look muddy or “dirty” instead of vibrant.
Experienced artists often mix deep colors using complementary colors (like blue + orange or red + green) to create rich, glowing shadows that still feel colorful.
Many artists use Payne’s Gray, a bluish-gray alternative, for dark areas. It’s softer and blends better with other watercolor tones.
Watercolor shines because of its luminosity—light reflects through transparent layers of paint and bounces off the white paper underneath.
When you add white paint, it sits on top of the paper and makes colors look opaque and flat, which defeats the natural glow of watercolor.
Skilled watercolorists plan ahead and leave white areas unpainted to create highlights. It takes practice, but it keeps your painting fresh and light-filled.
You're a beginner and still learning
You’re working in mixed media
You want a bold, graphic style
You're painting on colored or toned paper
You're combining watercolor with gouache