“c” looks like the easiest letter in the alphabet to draw — it’s just a broken circle, right? In practice, it’s one of the trickiest. That opening has to sit at exactly the right angle and width, or the letter reads as an “o,” a “e,” or nothing recognizable at all. This is the third entry in our glyph series, where we’re working through every character a font needs. So far we’ve covered “a” and “b.” Today: “c.”

A Short History of “c”

“c” traces back to the Phoenician letter gimel, which meant “camel” and is thought to have originally depicted a camel’s neck and head, or possibly a throwing stick — historians disagree. The Greeks adopted it as gamma, which produced a hard “g” sound, and its shape at that stage looked more angular, closer to a sharp corner than a curve.

When the Etruscans and then the Romans borrowed the Greek alphabet, something interesting happened: Etruscan didn’t distinguish clearly between the “g” and “k” sounds, so the letter that became Latin “C” ended up representing a hard “k” sound for a long time in early Latin, even though it kept gamma’s rounded descendant shape. Eventually the Romans split the letter in two — “C” stayed for the “k” sound in most contexts, and a new letter, “G,” was invented by adding a small stroke to “C” to represent the voiced sound separately. That’s why “C” and “G” still look so similar today; “G” is literally “C” with an addition bolted on.

The rounded, open shape softened further over centuries of handwriting, and by the time lowercase letterforms standardized during the Carolingian period, “c” had become the simple open curve we recognize today — one of the more visually stable letters across the whole history of the Latin alphabet.

Anatomy of a Lowercase “c”

Despite its simplicity, “c” has real technical vocabulary behind it. The main body is called the bowl, though unlike “b” or “o,” it’s an open bowl — the curve doesn’t close into a full loop. The gap at the end is called the aperture, and it’s arguably the single most important design decision in the entire letter.

Too wide an aperture, and “c” starts to look like a check mark or a stray bracket. Too narrow, and it starts collapsing into an “o,” especially at small text sizes where the eye doesn’t have much room to register the difference. The terminals — the ends of the stroke where the aperture opens — also matter a lot. They can be cut straight across, angled, or given a small flare, and each choice changes the letter’s personality substantially.

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“c” also has a close structural relationship to “e,” “o,” and even “s,” since all of these letters share curved strokes that need to feel like they came from the same pen or tool. Type designers often check “c” against “o” specifically, making sure the curve tension — how quickly or slowly the stroke thins and thickens — stays consistent between the closed and open round letters.

Designing the Letter From Scratch

Designers typically start “c” right after finishing “o,” since “o” establishes the basic curve tension and stroke contrast for round letters in the typeface. From there, “c” is essentially “o” with a calculated bite taken out of it.

The hardest part is deciding where to place the aperture and how wide to make it. Most designers sketch several versions at different angles — top-right opening, more centered, more counter-clockwise — and test them at actual reading sizes, because an aperture that looks elegant blown up on a screen can completely disappear when printed small on a business card or an Etsy product mockup.

Terminal treatment comes next. A sharp, flat-cut terminal gives “c” a more modern, engineered feel, common in geometric sans-serifs. A terminal with a slight curl or ball gives it warmth, which is why you’ll see that treatment often in friendly display fonts and children’s book typefaces. In script fonts, the terminal often extends into a small flourish or connecting stroke, since “c” frequently needs to link smoothly to the next letter in cursive-style designs.

Once the aperture and terminals are locked, designers cross-check “c” against “e” and “o” side by side, adjusting stroke weight and curve tightness until all three round letters feel like they belong to the same family rather than three unrelated shapes that happen to be curved.

Unique Facts About “c”

“c” is one of the most frequently used consonants in English, largely because it appears in so many common digraphs — “ch,” “ck,” “sc” — beyond its standalone use. It’s also one of the few letters in English that represents two completely different sounds depending on context: a hard “k” sound in words like “cat,” and a soft “s” sound in words like “cent.” This dual pronunciation is a direct leftover from Latin’s inconsistent handling of the letter centuries ago.

“c” is also notable for being one of the letters most prone to what type designers call “false roundness” — because it lacks a straight stroke anywhere in its structure, tiny inconsistencies in its curve are far more visible to the eye than they would be in a letter with straight edges to anchor against.

“c” in Popular Fonts

In Garamond and other old-style serifs, “c” carries a diagonal stress and a fairly wide aperture with subtle terminal flares, echoing broad-nib pen calligraphy. Helvetica tightens the aperture considerably and keeps the terminals cut cleanly, giving it a crisp, controlled look typical of Swiss design. Futura opens the aperture wide and keeps the bowl almost perfectly circular, in line with its geometric, compass-drawn aesthetic.

In script and handwriting fonts, “c” is frequently drawn with an extended entry or exit stroke so it can connect naturally to neighboring letters, and its aperture tends to be wider to keep the letter legible even when it’s leaning and looping through a signature-style baseline.

Summary

Lowercase “c” is proof that simplicity in type design is an illusion — a single open curve carries enormous responsibility for legibility, and the tiniest shift in its aperture can make or break how the letter reads at small sizes. From a Phoenician camel or throwing stick, through a borrowed Greek “gamma,” to the split that eventually produced “G” as a separate letter entirely, “c” has one of the more tangled backstories in the alphabet despite looking like the plainest shape on the page. Next up: lowercase “d” — “b”‘s mirror-image cousin, and a letter with its own set of optical tricks.

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