What size should a logo's smallest counter be?

No smaller than the thinnest stroke in the mark. If it is, it will close before the stroke does at every reduction.

Does holographic foil need bigger detail than solid foil?

Yes. The pattern reads as visual noise at small sizes, so counters need more room to stay legible.

Why rotational symmetry?

It makes the mark work at any orientation, which matters for app icons, embossed reverses and anything applied to a rotating object.

Sentral

Cyber Security

Brand guidelines
Version 1.0
↓ scroll

01 — The idea

A keyhole inside a letterform is a reduction problem before it is a design problem.

Client

A cyber security firm

Construction

True 180-degree rotational symmetry, with the keyhole placed dead on the centre of rotation and sized for 16 px first.

02 — Primary lockupStacked · symbol over wordmark

Cyber Security

03 — On light

Cyber Security

Ink on Bone

03 — On dark

Cyber Security

Signal Violet on Ink

04 — One colourFor fax, engraving, foil dies and single-plate letterpress

05 — Clear space

Clear space equals the keyhole's diameter on all four sides.
Minimum 14 mm wide. Verified as a 16 px favicon.

06 — Scale

48 MM

24 MM

12 MM

FAVICON

Favicon: the S alone, keyhole intact. Below 12 mm the wordmark is dropped and the symbol stands alone.

07 — ColourPantone from the Solid Uncoated book

Bone#EDE9E0RGB 237 233 224CMYK 0 2 5 7

Ink#1C1C1ERGB 28 28 30CMYK 7 7 0 88

Signal Violet#6B3EF5RGB 107 62 245CMYK 56 75 0 4

08 — Typography

Chivo · display

ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz 0123456789

Public Sans · text

Body copy is set at 16–18 px on screen and 9.5–10.5 pt in print, sentence case, with a maximum measure of 66 characters. Never letter-space lowercase body text.

JetBrains Mono · labels

Labels · captions · specification lines

09 — Do and do not

✓Keep the two leaf terminals identical in length and angle

✓Size the keyhole for the favicon, then scale up

✓Give holographic foil generous apertures

✕Never scale the keyhole proportionally down

✕Never break the rotational symmetry

✕Never set the mark where the slot can fill

10 — In application

A studio identity exercise. Mark, palette, type system and usage rules by the Print Peppermint design team.

Every identity we build ships with the file the press needs: vector mark, one-colour version, favicon set, Pantone Uncoated references and a guide like this one.

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A studio exercise. Sentral, and every brand in this series, is invented — no client commissioned it and none of it was ever sold.