Faber-Castell Polychromos: The Colored Pencil Built Around Lightfastness

A graphite pencil can be judged by darkness, point retention, smoothness, and consistency. A professional colored pencil has to solve another problem entirely: the mark must remain the color the artist intended.

That problem was already central to Faber-Castell when Polychromos appeared in 1908.

Alexander von Faber-Castell introduced the new artist pencil range with sixty colors. Company archives describe lightfastness as one of the main manufacturing challenges. The goal was not simply to place more colors in a box. The pigments had to survive exposure to light without fading rapidly or shifting enough to damage finished artwork.

That requirement changes how a colored pencil is engineered.

A graphite core is based mainly on graphite, clay, and processing choices that control hardness and friction. A colored pencil replaces graphite with pigments and a binder system. Each color is therefore its own formulation problem. A deep red and a pale yellow do not behave identically simply because they are placed in the same wooden barrel.

Pigments differ in strength, opacity, particle behavior, and resistance to light. The manufacturer has to turn those different materials into pencils that still feel like members of one family.

The name Polychromos fits that ambition. It comes from Greek roots meaning many colors.

The first range contained sixty.

The modern range contains 120.

More colors do not merely reduce the need for mixing. They let an artist choose between neighboring hues whose differences may be subtle but important: warm and cool reds, several earth tones, multiple greens, blue-violets, skin colors, greys, and dark chromatic alternatives to black.

The modern Polychromos pencil uses a 3.8 mm core, noticeably thicker than a typical writing-pencil core. That diameter gives the artist enough pigment for broad layering while still allowing a fine point when sharpened carefully.

The core is also bonded to the wood using Faber-Castell’s SV process. The purpose is practical: a colored pencil that has been dropped should be less likely to contain a fractured core that breaks repeatedly during sharpening.

That matters more than it seems.

A broken graphite pencil is annoying.

A broken professional colored pencil can be expensive, and replacing one color from a large set interrupts a carefully built palette.

Polychromos cores are water-resistant and smudge-resistant rather than water-soluble. This separates them from Faber-Castell’s Albrecht Dürer watercolor pencils, which are designed to dissolve when activated with water.

The distinction is important for collectors because pencils that look similar can belong to very different drawing systems.

With Polychromos, the mark is intended to remain a dry colored-pencil mark.

Layering is therefore central to how the pencil works.

An artist can place one translucent color over another and gradually build saturation. Light pressure preserves the paper surface and allows additional layers. Heavier pressure compresses the layers and creates a denser, more polished surface.

This is one reason the range benefits from a relatively firm core.

A very soft pencil can produce intense color quickly, but it may fill the paper tooth sooner. Polychromos is designed to support controlled accumulation.

The paper itself becomes part of the system.

On smooth paper, a sharp Polychromos point can produce fine edges, small details, and clean hatching. On paper with more tooth, pigment catches on the raised texture and creates a grainier field that can accept additional layers.

The same pencil can therefore look very different on two papers.

That makes testing colored pencils more complicated than making one dark scribble.

A useful test should include a light-pressure swatch, several layered passes, a sharp line, cross-hatching, and a burnished area. Try the same color on two paper surfaces. Then layer a neighboring hue over it.

Only then does the pencil begin to show what it can do.

Lightfastness deserves its own test conceptually, even if a collector does not want to wait years.

Color fading is caused when pigments change under exposure to light, particularly ultraviolet radiation. Not every pigment has the same resistance. That means a professional colored-pencil range cannot honestly treat all hues as chemically identical.

Faber-Castell publishes lightfastness information for Polychromos colors rather than hiding this difference.

That is useful to artists and collectors for the same reason grade markings matter on graphite pencils: the label carries technical information about expected behavior.

For an artist selling work, lightfastness can affect material choice.

For a collector, it adds another field worth recording.

Color number.

Color name.

Lightfastness rating.

Country marking.

Logo style.

Barrel typography.

Packaging generation.

A single Polychromos pencil is not just “red.” It is a precisely identified color in a long-running system.

The 1908 origin also makes older packaging particularly interesting.

Faber-Castell’s own archive shows that the original Polychromos range was sold in several packages and advertised as a major new product family. The company later recreated elements of that historical presentation for the 111th anniversary edition, including an older style of barrel stamping.

That tells collectors something important: imprint design changed over time.

A vintage Polychromos should therefore not be dated by barrel color alone.

Typography, logo, color numbering, box graphics, company wording, and the specific assortment can all provide clues.

The series also gives us a useful contrast with the Castell 9000.

Both are long-lived Faber-Castell artist pencils, but they solve different material problems.

Castell 9000 organizes graphite through hardness grades.

Polychromos organizes pigments through color.

A Castell 9000 set asks how light or dark, hard or soft, the graphite should be.

A Polychromos set asks which hue, how stable, how layerable, and how opaque or transparent the mark should be.

The wooden-pencil format is almost identical.

The engineering problem inside it is not.

That difference is exactly why the pencil archive benefits from including colored pencils as more than a side category.

Colored pencils are not graphite pencils painted in brighter lacquer.

Their cores use different materials, different performance criteria, and different methods of comparison.

Polychromos is a particularly good model for seeing that clearly because its history is unusually long and its present specification is well documented.

The modern line is made in Germany and available as individual pencils as well as sets up to 120 colors. Individual replacement is important in a professional range because colors are not consumed equally. An artist may use a favorite dark brown or skin tone many times faster than a rarely needed violet.

A complete set therefore behaves differently from a graphite set.

With graphite, an HB or 2B might disappear first.

With colored pencils, consumption reflects subject matter and personal palette.

A landscape artist and a portrait artist can begin with identical 120-color tins and end with completely different shortages.

Those wear patterns tell a story.

For collectors who also use their pencils, I would keep at least one untouched example of an interesting older Polychromos generation and one working pencil from the same period when possible. The unsharpened example preserves the factory finish and imprint. The used one reveals wood, core diameter, sharpening quality, pigment behavior, and how the material has aged.

With vintage colored pencils, testing should be gentle.

Old binders can change.

Wood can dry.

A pencil that has survived for decades should not automatically be expected to behave exactly like a fresh modern example.

That difference can itself be informative.

Polychromos has existed long enough for the pencil to serve as a timeline of professional colored-pencil manufacturing.

Sixty colors in 1908.

A century of changes in pigments, packaging, labeling, wood finishing, and production.

One hundred and twenty colors today.

The barrel still looks simple.

The difficult part has always been inside: making many different pigments behave predictably enough to belong in one box.

That is why Polychromos deserves a place beside the great graphite pencils in a serious pencil collection.

Graphite asks for a controlled scale of grey.

Polychromos asks for a controlled world of color.