The triangle as his recurring motif

Olle Baertling was a Swedish painter working through the middle decades of the twentieth century, and his mature work sits firmly in the geometric abstract tradition. The short answer to what he painted is that he painted shapes. The triangle is the form that recurs most often, usually set against a flat ground and allowed to read as a single decisive gesture rather than as part of a scene.

This matters for anyone used to thinking about art in terms of motifs. There is no horizon line in a Baertling, no figure, no still life arrangement. The question of subject becomes a question of structure. What he returned to was the relationship between a sharp geometric form and the space around it, which he described through the idea of the open form, a shape that seems to extend beyond the edge of the canvas.

For a reader weighing a print against a wall, this is the practical point. A Baertling composition behaves like architecture. It sets a direction and a weight in the room, and it does that through geometry alone.

Color fields and the open form

The second recurring element is color used flat. Baertling worked with clean, saturated hues, often red, yellow, blue and black, laid down in unmodulated planes. There is no brushwork texture to read, no shadow, no atmosphere. The color is the subject as much as the shape is, and the two are inseparable in a finished composition.

His open forms push this further. A trapezoid or triangle will appear to continue past the frame, implying space the canvas cannot hold. The effect is expansive rather than decorative, and it is the reason his work is often grouped with concrete and constructivist painting of the period rather than with lyrical abstraction.

In a room, that flatness has consequences. A Baertling print will not add texture or warmth the way an impressionist landscape might. What it adds is clarity and scale. A large triangle in a strong red changes the temperature of a wall in a way a textured scene cannot. Readers comparing canvas and paper formats will find the flat color reads cleanly on either, a point covered in more depth in the guide to canvas and poster editions.

How the work translates to a wall

Because there is no scene to enter, a Baertling composition works the way a piece of graphic design works. It holds a wall from across the room. That makes it well suited to spaces where a figurative image would feel busy, such as a hallway, an office wall or the space above low furniture.

It also means the surrounding decor carries more of the load. With a landscape, the image supplies context. With a Baertling, the wall color, the frame and the furniture do that work. A black and red triangle above a pale wall reads as deliberate. The same print against a patterned wall reads as noise. Sizing matters more here than with most artists, since a small geometric composition loses its authority, a problem addressed in the guide to choosing print sizes for small rooms.

The honest caveat is that this is a cool, demanding kind of image. Readers who want a subject to look into, a landscape to wander through, will find Baertling unrewarding. Those who want a strong graphic presence will find few painters who commit to it more completely. For comparison, a figurative alternative such as a landscape scene with a windmill answers a different decorative need entirely.