Choosing a Graphite Grade for What You're Actually Drawing

The H/B system itself is straightforward once it clicks. Applying it while you're actually drawing is a different skill: standing in front of a subject and knowing, without stopping to think through the whole scale, which pencil to pick up next. This is that guide, worked from the subject backward to the grade rather than from the grade outward to a description.

Ten subjects, worked through the tool

Running a target darkness for each of these through recommendGrade() — the same reverse-lookup behind the graphite grade guide — gives a concrete starting grade for each:

• Botanical illustration, fine construction line (target 1) → 8H
• Technical or architectural underdrawing (target 2) → 6H
• Portrait, light construction sketch (target 2.5) → 5H
• General sketch linework and outlining (target 5) → HB
• Portrait, skin mid-tone (target 5.5) → B
• Landscape, mid-distance foliage mass (target 6) → 2B
• Portrait, core shadow under the jaw or nose (target 7) → 4B
• Still life, dark glass or glazed ceramic (target 7.5) → 5B
• Deep cast shadow or dark hair (target 8.5) → 7B
• Velvet-black accent, the pupil of an eye (target 9.5) → 9B

These are starting points, not fixed prescriptions — the whole reason the underlying scale is continuous is that pressure and paper shift where a given grade actually lands. But as a first reach, working from "what does this passage need to look like" straight to a grade is a far faster habit to build than translating through the abstract H/B scale every time.

One subject, worked through several grades

A single subject rarely uses just one grade end to end. Take a simple apple, lit from one side: the initial construction — the ellipse of the outline, the placement of the stem — goes down in a hard grade around 5H or 6H, light enough to erase or draw over cleanly. Blocking in the broad shape and the general edge of the cast shadow might move to an H or 2H, still light but slightly more visible as the drawing firms up. The body of the apple itself, in mid-light, sits comfortably in B to 2B. The shaded side, turning away from the light source, moves to 4B. The core of the cast shadow on the table, and the small dark accent where the stem meets the fruit, is where a 7B or so earns its place. Five or six grades, each doing a specific, narrow job — not because the subject demands complexity, but because each passage genuinely calls for a different amount of graphite on the page.

Checking the apple example against the darkness scale

It's worth confirming that mini progression actually climbs the scale the way it should, rather than trusting the description alone. Running each named grade through gradeInfo(): 6H sits at darkness 2, 2H at darkness 4, 2B at darkness 6, 4B at darkness 7, and 7B at darkness 8.5. That's a steady, roughly even climb from construction line to deepest shadow, with no awkward jump or plateau in the middle — which is exactly the shape a well-planned value progression should have. If two adjacent passages in a real drawing end up using grades that map to nearly the same darkness value, that's usually a sign either the drawing doesn't actually need both passages distinguished, or the wrong pair of grades was picked for a distinction that does matter.

Combining grades in one area rather than switching outright

Grade choice isn't always a single decision per passage. Cross-hatching or layering two grades together — a light HB base with a 4B worked into just the darkest pockets, for instance — produces a richer, more varied dark than either grade alone, because the softer grade's graphite sits in the texture the harder grade already roughened slightly, rather than gliding over an untouched surface. This "glazing" approach, building a passage from more than one grade rather than committing a whole area to a single one, is often what separates a flat, single-value dark from one with subtle internal variation, and it's a natural extension of the subject-to-grade table above rather than a departure from it: use the table to pick a base grade, then layer selectively rather than switching pencils outright for every small internal shift.

A quick mid-drawing sanity check

When a passage isn't reading the way you expected despite reaching for the "correct" grade from the table, it's worth checking two things before assuming the grade choice was wrong. First, compare the actual mark against a value scale or the graphite grade reference's nearest-step column — the issue is sometimes pressure or paper, not grade, and the comparison isolates which. Second, check the passage against its neighbours rather than in isolation, since value (like colour) is judged relatively; a 4B shadow can look insufficiently dark purely because the mid-tone next to it is lighter than intended, not because the shadow itself is wrong.

Why 2B does most of the work

Ask most people what's actually in daily use in their pencil case, regardless of what a "complete" set is supposed to contain, and 2B comes up disproportionately often. There's a real reason for that beyond habit. 2B sits at darkness 6 on the 0–10 scale — just past the exact midpoint of HB's darkness 5 — which puts it at the center of what the full-scale guide calls the general-purpose band (HB through 2B). That position matters mechanically: because darkness responds to both grade and pressure, a mid-range grade like 2B has the widest practical window either side of its "default" mark before it stops being useful for the job at hand. Press lighter than usual and a 2B eases toward HB territory; press harder and it edges toward 3B or 4B — a forgiving span that covers most of the values an everyday sketch actually needs without a pencil change. A 6H or an 8B has no such cushion: push a 6H harder and it's still unmistakably a light, hard line; push an 8B lighter and it's still a soft, dark, smudge-prone mark. The extreme grades are precise tools for a narrow job; 2B is the generalist that covers the middle of the range other grades can't reach into as flexibly.

When to deviate from the "recommended" grade

The subject-to-grade table above optimises for accuracy — hitting a specific target darkness as directly as possible. That's not always the goal. A loose, gestural sketch style often benefits from deliberately choosing a softer grade than the "correct" one and letting pressure and speed do more of the expressive work, since a very soft pencil responds dramatically to even small changes in hand speed and angle, which is part of what gives loose sketches their energy. A tight, controlled rendering in the opposite direction sometimes stays on a harder-than-strictly-necessary grade throughout, building depth through many patient layers rather than jumping straight to a soft grade for expedience, because the layered build keeps edges and texture more controlled than a single heavy pass would. Neither approach is wrong; the table is a default for accuracy, and style is a deliberate, informed departure from it once you actually understand what the default is doing and why.

Subject categories that lean hard or soft

Beyond individual passages, some entire subjects skew the whole working set toward one end of the scale before you've drawn a line. Technical, botanical, and architectural subjects — anything where line precision matters more than tonal richness — tend to live mostly in the H range, with soft grades reserved for occasional deep accents rather than broad use. Portraiture and figure work usually centre on the general-purpose band, since skin tones rarely reach true black or true white and most of the drawing's information lives in a fairly narrow mid-value range. Moody, high-contrast subjects — a still life lit by a single hard light source, a night scene, dense foliage in shadow — lean the working set toward the soft end, with hard grades reduced to just enough for the lightest construction work. Recognising which category a subject falls into before starting saves the friction of discovering mid-drawing that half your pencil case is going unused.

Building the instinct

The fastest way to internalise subject-to-grade matching is to keep a small reference sheet next to your working area for a few weeks — not the full 20-grade scale, but a short list like the ten subjects above, in your own words, updated as you notice patterns in what you actually reach for. Within a handful of sketches, most people find they've memorised their own small set of go-to grades for the subjects they draw most often, at which point the table becomes largely unnecessary for anything routine and useful again only for a genuinely unfamiliar subject or an unusually demanding passage. For the rare moment a specific grade's exact darkness, smudge behaviour, or paper pairing is worth double-checking, the graphite grade reference has the full twenty-grade breakdown in one table, and paper tooth: how texture changes graphite and ink differently covers the paper half of the same decision, which matters just as much as the grade itself once you're past the basics.