Choose watercolor when you want transparent washes and light that comes through the paper. Choose gouache when you want more opaque, flatter areas of color that can cover darker marks. Both use water, but their different opacity changes how you plan layers and highlights.
Gouache and watercolor both use water, but opacity leads to different ways of working. Winsor & Newton describes its Designers’ Gouache as opaque and its watercolors as transparent; its guide also notes that gouache has a higher pigment load. Use the finish you want as the first decision, then check the instructions for the exact paint range.
Gouache and watercolor side by side
| Decision | Gouache | Watercolor |
|---|---|---|
| Appearance | Opaque, more even blocks of color | Transparent washes with the paper showing through |
| Light areas | Add an opaque light mark where the paint allows it | Often reserve the paper for the lightest areas |
| Layer planning | Opaque passages can cover marks beneath them | Transparent layers let underlying colors remain visible |
| Useful direction | Illustrations, graphic shapes and opaque details | Luminous washes, transparent layers and portable studies |
These are broad working differences, not rules for every product. Some paints are designed for mixed techniques, and pigment behavior varies by color and range.
Choose by the finish you want
Choose watercolor if you want transparent passages, soft washes and the paper to provide the lightest values. Plan pale areas before painting, since transparent color will not cover the page in the same way as opaque gouache.
Choose gouache if your work needs flatter, more opaque passages or light details over a darker painted area. Winsor & Newton describes Designers’ Gouache as opaque watercolour, but check a color’s product information for opacity and permanence rather than assuming every color behaves identically.
Surface and materials
Start with a surface recommended by the paint maker for the product you choose. Our watercolor paper guide explains paper weight and texture for watercolor work. For brush shape and capacity, see the watercolor brush buying guide.
If you are comparing paint families more broadly, our acrylic vs. oil vs. watercolor guide covers drying, cleanup and working style. Browse art supplies.
Official references
Common questions
Is gouache the same as watercolor?
They are related water-based paints, but traditional gouache is more opaque while watercolor is transparent. Check the maker's description because product formulas and intended techniques vary.
Can you use gouache and watercolor together?
Some artists combine them, including using gouache for opaque details over watercolor. Follow the paint maker's guidance for the specific range and surface.
Which is better for beginners, gouache or watercolor?
Choose by the look you want: watercolor suits transparent washes, while gouache suits opaque shapes and flatter color. Neither is automatically easier for every painting style.
Do you need white paint for watercolor?
Watercolor highlights are often left as unpainted paper; gouache can provide opaque light marks. Check how the specific paint range describes its white and mixing behavior.