What Is Notan in Art? A Painter’s Guide to Value, Composition & Block-In

1. The Core Philosophy of Notan: Seeing the Big Relationships First

The word Notan (濃淡) is a traditional Japanese design concept that translates literally to “dark-light harmony.” At its heart, Notan is not merely an artistic style or a rendering trick—it is a fundamental way of seeing.

When beginners sit down to draw or paint, the most common trap is diving straight into tiny details: the curve of an eyelash, individual leaves on a distant oak tree, or ripples across water. But master painters know a crucial truth:

Notan teaches us to squint at our subject, mentally discarding surface textures and local colors until only two fundamental elements remain: where the light hits and where the shadow falls. By simplifying a complex scene into bold, interlocking silhouettes of positive light and negative dark, you immediately expose whether your composition has visual strength or is cluttered and weak.

The 2-Value vs. 3-Value Notan Study

In atelier practice, Notan studies are generally explored in two stages:

• 2-Value Notan (Pure Black & White): Every element is classified as either 100% light or 100% dark. This radical simplification tests whether your main subject has a readable silhouette and whether your shapes create an engaging visual pattern across the rectangular frame.
• 3-Value Notan (The 60-30-10 Compositional Framework): Adds a single midtone value between the deep shadow and bright highlight. Many artists use 60-30-10 as a helpful working guideline for value dominance: allocating roughly 60% of the canvas to a dominant value mass, 30% to a supporting secondary mass, and 10% to high-contrast focal accents. This guideline is not a rigid mathematical formula, but a practical way to prevent visual clutter and establish clear visual hierarchy.

2. The Complete Painting Progression: From Notan to Refinement

Understanding Notan gives you a reliable compass for the entire painting process. Instead of feeling overwhelmed by thousands of competing choices, master painters follow a logical journey from large underlying structure to final expressive marks:

3. The Art of the Block-In: Why Large Masses Make Everything Easier

Once you have established your Notan idea, you translate that vision onto the canvas through a stage called the block-in.

A block-in is the process of mapping out the entire composition using broad, flat shapes of transparent or thinned paint. Master painters use their largest brushes during this phase, actively resisting the temptation to render a single eye, petal, or window pane.

During the block-in stage, you accomplish several critical tasks simultaneously:

• Verify Proportions: Checking whether head-to-body ratios, horizon lines, and negative space boundaries are accurate while changes are still easy to make.
• Eliminate White Canvas: Covering the stark white paper or canvas removes harsh optical glare, allowing you to judge colors and values accurately.
• Establish the Value Key: Locking in the deepest dark and brightest light so every midtone placed later has an established scale to measure against.

4. Foundations of Impressionism: Structure Beneath Expressive Color

When studying the vibrant, expressive brushwork of Impressionist and Post-Impressionist painters (such as Claude Monet or Vincent van Gogh), it is easy to focus entirely on color and gesture. However, for modern painters learning from their work, analyzing the underlying value structure offers an invaluable educational lens:

• Atmospheric Light Over Isolated Objects: Observing how ambient light unifies an entire landscape or room, rather than rendering objects in isolation.
• Optical Mixing & Broken Color: Placing distinct dabs of unmixed color side-by-side so they visually interact in the viewer's eye, capturing the shimmering sensation of changing daylight.
• Directional Brushwork as Form: Using brushstroke direction to follow the natural contours of structural mass, wind currents, and rhythm across the composition.

While historical artists developed diverse individual methods rather than adhering to a single formula, studying their work through a Notan framework demonstrates how strong underlying value relationships give color and brushwork the freedom to be bold without collapsing into visual confusion.

5. Color Washes, Glazing & Temperature: Bringing Life to Values

Once value and form are established through your Notan block-in, color enters the canvas not as a random coat of paint, but as an intentional optical system:

Color Washes: Setting the Ambient Key

A color wash is a thin, fluid application of diluted or transparent pigment spread across broad sections of the canvas. In watercolor, a wash sets the luminous tone of skies and backgrounds; in oil and acrylic underpaintings, a warm or cool wash (imprimatura) unifies the entire scene, preventing disconnected patches of color and establishing the ambient lighting atmosphere before opaque strokes begin.

The Luminous Magic of Glazing

Glazing is the technique of applying a transparent veil of dark or rich color over a completely dry, lighter underpainting.

• Painter's Optical Depth vs. Opaque Paint: From a practical painter's perspective, glazing produces a unique luminous depth compared to flat, opaque paint. When a thin, transparent veil of pigment is laid over a dry, lighter underlayer, the colors interact optically rather than through physical mixing on the palette. This creates a glowing resonance—reminiscent of stained glass—that is difficult to achieve with opaque mixtures alone.
• When to Glaze in Oils & Acrylics: Glazes are invaluable for enriching shadow depths, shifting warm tones to cool (or vice versa), and harmonizing diverse color passages without losing the crisp drawing underneath.

Shadow Color: Why Shadows Are Never Just Black

One of the most transformative breakthroughs for any developing artist is abandoning the habit of mixing black to darken colors for shadows.

• Value vs. Temperature: Value refers to how light or dark a mark is; Temperature refers to how warm (yellow, red, orange) or cool (blue, violet, green) it feels. A shadow can be deeply dark in value while radiating rich chroma and temperature.
• Cool vs. Warm Shadow Strategies: Under direct warm sunlight, shadows often take on a cool, bluish or violet cast due to the ambient skylight filling in the shadow areas. Conversely, on an overcast gray day (cool light source), shadows frequently read as warm, earthy umbers. Treating cool shadows as an absolute rule is a mistake—always observe the light source and surrounding environment.
• Reflected Light: Shadows are rarely pitch-black voids. Light bounces off nearby tables, grass, clothing, and walls, casting warm or cool reflected glows into the core shadows of your subject.

Warm/Cool Relationships: Creating Spatial Vibration

In painting tradition, artists frequently observe a useful tendency: warm colors often appear to advance toward the viewer, while cool colors tend to recede into atmospheric distance. However, this is a helpful perceptual tendency rather than an absolute rule.

In practice, spatial depth is shaped by a combination of factors: value contrast, saturation levels, edge crispness, and surrounding color context. For example, an intensely saturated cool blue can easily pull forward if placed against a dull, muted warm brown. When used thoughtfully alongside your underlying Notan value structure, warm and cool temperature shifts introduce rich optical vibration and atmospheric realism to your work.

6. Mediums & Materials: Thinking with Your Chosen Paint

Every painting medium possesses distinct physical properties that influence how you move from a Notan block-in to a finished work:

7. Texture & Surface: Speaking with Deliberate Marks

Texture in a painting is never just decoration—it is a deliberate language that communicates depth, focus, and tactile presence.

Consider how varying your brushwork and surface handling enhances your composition:

• Smooth vs. Rough Surfaces: The human eye naturally gravitates toward areas of highest textural contrast and crispest edges. Keeping background masses smooth and quiet while applying thick, juicy paint at the focal point instantly commands attention.
• Glazing vs. Scumbling: Transparent dark glazes create deep, receding space, whereas semi-opaque, dry-brushed scumbles bring warmth and dust-like light forward.
• Selective Application: Avoid the mistake of texturing every square inch of the canvas equally. Texture works best when it has quiet, restful negative space to contrast against.

8. Step-by-Step Beginner Notan Practice Exercise

Ready to put this workflow into action? Follow this straightforward step-by-step exercise with your next painting:

1. Choose a Reference Photo: Select a photo with clear natural lighting and interesting cast shadows.
2. Generate a 2-Value Notan: Reduce the image to pure black and white shapes to inspect the silhouette balance.
3. Check the Negative Space: Ensure the background shapes feel balanced and that the subject has room to breathe.
4. Establish the 3-Value Dominance: Assign 60% of the canvas to a dominant value, 30% to secondary, and 10% to focal accents.
5. Block In with a Large Brush: Cover the entire canvas using thin, broad washes of tone.
6. Verify Value Relationships: Step back 6 feet (or squint) to confirm the scene reads clearly across the room.
7. Establish Warm/Cool Temperature Shifts: Apply transparent washes and glazes, keeping shadows chromatically alive with reflected light.
8. Apply Selective Texture: Use expressive brushstrokes and thicker paint strictly around your primary focal point.
9. Refine Details Last: Add fine lines and sharp edge accents only after the large structure is completely sound.

9. Explore Notan in the Free Artist Studio

To help you train your eye in value and composition, The Alchemist Artists Studio includes dedicated in-browser diagnostic tools that run 100% free with zero downloads: