Gouache vs Watercolor | Differences, Pros and Cons

As an artist, you might have come across various painting mediums, but in this article, we’ll dive into the world of gouache and watercolor. While both mediums use water as a base, they offer unique characteristics that can significantly impact your art.

Gouache differs from watercolor in its opacity and matte finish, while watercolor is known for its transparency and luminosity. Gouache may be perceived as easier due to its ability to cover mistakes and layer colors, but both mediums have their own unique learning curves and challenges.

Our goal is to compare and contrast gouache and watercolor, highlighting their key differences, advantages, and disadvantages. This will help you decide which medium aligns best with your artistic preferences and style.

Characteristics of Gouache

1. Definition and composition

Gouache is a type of paint that falls under the watermedia category, similar to watercolor. It is composed of pigments, water, and a binding agent, usually gum arabic or dextrin.

The significant difference between gouache and watercolor is the addition of a white pigment, such as chalk or zinc white, which gives gouache its distinct opacity.

This opaque characteristic sets it apart from watercolor, allowing artists to create more vibrant and solid colors.

Picture Credit: Jess Chung on YouTube.com

2. Opacity and color intensity

One of the most notable characteristics of gouache is its opacity. Gouache paint is thicker and more pigmented than watercolor, leading to a matte, velvety finish.

This makes it ideal for creating bold, intense colors that stand out on the canvas.

Unlike watercolor, gouache doesn’t rely on the white of the paper to achieve its vibrancy, which means you can easily layer lighter colors over darker ones.

This versatility allows for a more extensive range of painting techniques and styles.

3. Drying time and reactivation

Gouache dries relatively quickly, often within minutes, which can be both an advantage and a challenge. The quick drying time allows artists to add multiple layers without waiting for extended periods.

However, it also means that you need to work efficiently to avoid the paint drying on your palette or brush.

One unique aspect of gouache is its ability to be reactivated with water even after it has dried on the paper.

This means you can easily make adjustments to your painting or blend colors even after the initial application.

However, be cautious when using this feature, as overworking the paint can lead to muddy colors and a loss of vibrancy.

4. Common uses in art

Gouache is a versatile medium that has been popular among artists for centuries. It is often used in illustration, design, and fine art.

Because of its opaque nature, gouache is particularly well-suited for creating flat, graphic illustrations with crisp edges and solid blocks of color.

It is also an excellent choice for mixed media artwork, as it can be combined with other mediums like watercolor, ink, or colored pencils.

In the realm of fine art, gouache can be used to create paintings with a unique look and feel, distinct from the luminosity and transparency of watercolor.

Many artists enjoy the challenge of working with gouache’s unique properties, such as its opacity and reactivation potential.

Additionally, its ability to create both delicate washes and bold, vibrant colors makes it a valuable addition to any artist’s toolbox.

Characteristics of Watercolor

1. Definition and composition

Watercolor is a popular painting medium known for its delicate, transparent washes of color.

Like gouache, it is a watermedia paint that consists of pigments, water, and a binding agent, typically gum arabic.

The absence of any opaque white pigment is what gives watercolor its unique translucent quality, allowing the white of the paper to shine through and contribute to its overall luminosity.

2. Transparency and luminosity

The transparency of watercolor is one of its most defining characteristics.

When applied to paper, the paint’s pigments are suspended in a thin layer of water, allowing light to pass through and reflect off the paper’s surface.

This creates a luminous effect that is unique to watercolor, giving paintings a soft, ethereal quality.

Watercolor pigments can be applied in varying concentrations, from highly diluted washes to more concentrated, vibrant hues.

By building up layers of transparent color, artists can achieve a depth and complexity that is both subtle and visually striking.

3. Drying time and reactivation

Watercolor dries relatively quickly, much like gouache, although the exact drying time can vary depending on factors such as the amount of water used, the humidity of the environment, and the absorbency of the paper.

The fast drying time allows artists to work quickly and efficiently, adding layers of color to build up depth and complexity.

Once dry, watercolor becomes permanent and cannot be easily reactivated like gouache.

This means that artists need to plan their work carefully and be mindful of preserving the white of the paper, as mistakes can be difficult to correct.

On the other hand, the permanence of watercolor can be an advantage, as it allows for the creation of intricate, layered compositions without the risk of colors blending unintentionally.

Drying time and reactivation

4. Common uses in art

Watercolor has a long history in the world of art, with many famous artists like J.M.W. Turner and John Singer Sargent known for their mastery of the medium.

Watercolor is often used for landscape paintings, botanical illustrations, and portraiture, where its luminous, transparent qualities can be used to great effect.

In addition to traditional painting styles, watercolor is also popular among contemporary artists, who use the medium to create abstract, expressive works that push the boundaries of the form.

The versatility of watercolor, combined with its unique aesthetic qualities, makes it a favorite choice for artists of all skill levels and styles.

Gouache vs Watercolor: Key Differences

1. Opacity and transparency

The most prominent difference between gouache and watercolor lies in their opacity and transparency.

Gouache is an opaque medium, meaning that it can completely cover the paper or underlying layers of paint, while watercolor is transparent, allowing the white of the paper to show through and contribute to the overall luminosity of the painting.

This fundamental difference affects the way each medium is used and the visual results that can be achieved.

2. Color intensity and vibrancy

Gouache and watercolor also differ in terms of color intensity and vibrancy. Gouache is known for its bold, matte colors, which can be applied in solid blocks or blended together for a smooth, even finish.

Watercolor, on the other hand, is characterized by its delicate, transparent washes that create a luminous, glowing effect.

While both mediums can produce vibrant hues, the way they interact with light and the paper’s surface results in distinctly different visual effects.

3. Layering and blending techniques

The layering and blending techniques used in gouache and watercolor painting differ significantly due to their contrasting levels of opacity.

With gouache, artists can easily layer lighter colors over darker ones, making it possible to build up complex compositions with multiple overlapping elements.

This is particularly useful for creating flat, graphic illustrations or designs with crisp edges and a matte finish.

Watercolor layering, also known as glazing, involves applying thin, transparent washes of color over one another to create depth and complexity.

Since watercolor is transparent, each layer must be carefully planned, and the white of the paper must be preserved to achieve the desired luminosity.

Blending in watercolor typically involves working with wet paint, allowing colors to mingle and flow together on the paper’s surface.

4. Ease of use and learning curve

Both gouache and watercolor have their own unique learning curves, and the ease of use for each medium may vary depending on an individual artist’s background and preferences.

Watercolor is often seen as a more challenging medium, as it requires careful planning, precision, and a good understanding of the delicate balance between water, pigment, and paper.

Mistakes can be difficult to correct, and the transparency of the medium demands a strategic approach to layering and preserving the white of the paper.

Gouache, on the other hand, can be more forgiving due to its opacity, allowing for easier corrections and layering.

However, working with gouache also presents its own challenges, such as managing the paint’s drying time and avoiding overworking the paint to maintain color vibrancy.

Ease of use and learning curve

Advantages and Disadvantages

1. Advantages of gouache

Opacity: Gouache’s opaque nature allows artists to create solid blocks of color, making it ideal for graphic illustrations and designs.

Versatility: Gouache can be used for a variety of painting techniques, from bold, flat colors to more delicate, transparent washes.

Layering: The ability to layer light colors over dark ones provides greater flexibility and control in creating complex compositions.

Reactivation: Gouache can be reactivated with water, enabling adjustments to be made even after the paint has dried on the paper.

Mixed media compatibility: Gouache works well with other mediums, such as watercolor, ink, or colored pencils, making it an excellent choice for mixed media projects.

2. Disadvantages of gouache

Drying time: Gouache dries quickly, which can be challenging for artists who need more time to blend and manipulate their paint.

Color shift: As gouache dries, the colors may shift slightly, making it more difficult to predict the final appearance of a painting.

Overworking: Reactivating gouache after it has dried can lead to muddy colors and a loss of vibrancy if not done carefully.

Availability: Gouache may be less widely available and more expensive than watercolor, depending on the brand and quality.

3. Advantages of watercolor

Transparency and luminosity: Watercolor’s transparent nature creates a unique luminous effect that is difficult to achieve with other mediums.

Delicate washes: The ability to create delicate, transparent washes allows for a wide range of artistic effects and styles.

Portability: Watercolor sets are often compact and lightweight, making them ideal for plein air painting or travel.

Fast drying time: Watercolor dries quickly, allowing artists to work efficiently and add multiple layers without waiting for long periods.

I have written a separate article on drying times of watercolor which you might want to check out!

Permanence: Once dry, watercolor becomes permanent, which can be advantageous for creating intricate, layered compositions.

4. Disadvantages of watercolor

Learning curve: Watercolor can be challenging to master, requiring a good understanding of the balance between water, pigment, and paper.

Planning: The transparent nature of watercolor necessitates careful planning and preservation of the white of the paper to achieve the desired luminosity.

Correcting mistakes: Since watercolor becomes permanent once dry, mistakes can be difficult to correct, and overpainting can lead to a loss of transparency and luminosity.

Layering limitations: Watercolor layering, or glazing, must be approached strategically, as applying dark colors over light ones can result in a muddy appearance.

Choosing the Right Medium for Your Art

1. Factors to consider when selecting gouache or watercolor

When deciding whether to use gouache or watercolor for your artwork, several factors come into play. These include your preferred style, desired visual effects, and the techniques you enjoy using.

It’s essential to consider the unique properties of each medium, such as opacity, vibrancy, and the ability to layer and blend colors, as well as your own artistic goals and preferences.

2. Personal experiences and opinions

As a watercolor artist, I’ve always been drawn to the luminous, delicate qualities of watercolor and the way it allows me to create subtle, intricate compositions.

But, I’ve also experimented with gouache and found its versatility and bold, matte colors appealing, particularly for more graphic illustrations and designs.

It’s important to note that my personal preferences may not align with yours. Every artist’s journey is unique, and what works for me may not work for you.

The key is to explore both mediums and determine which one resonates with your own artistic sensibilities and aspirations.

3. Experimenting with both mediums

One of the best ways to determine which medium is right for you is to experiment with both gouache and watercolor.

By trying different techniques, styles, and approaches, you can gain a deeper understanding of the unique characteristics of each medium and how they align with your artistic vision.

Invest in a small set of gouache and watercolor paints, and spend some time experimenting with each. Create swatches to observe the differences in opacity, vibrancy, and drying times.

Practice layering and blending techniques to see how they differ between the two mediums.

You may even consider creating a mixed media piece, incorporating both gouache and watercolor to see how they interact and complement each other.

Experimenting with both mediums


There is no definitive answer when it comes to choosing between gouache and watercolor, as both mediums offer unique advantages and challenges.

The choice ultimately depends on your personal preferences, artistic goals, and the specific requirements of your projects.

To find the best fit for your artistic journey, take the time to explore and experiment with both gouache and watercolor.

Embrace the process, and let your creative instincts guide you in discovering the medium that resonates most with your vision and passion.

Mehak Verma

I love creating both traditional and digital watercolour art. Why? As a kid, transitioning from sketch pens to paint brushes and water soluble colours was a big deal. Hope you find what you're looking for on my website.

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