Signal Encrypted Messenger

Signal is the non-profit encrypted messenger whose visual identity distills its mission into a single color: a specific cobalt-blue that says "we are not Facebook, we are not Telegram, we are a public-interest tool." The brand is calm editorial white space, the speech-bubble logomark, Inter type at generous sizes, and an essay-driven voice shaped by president Meredith Whittaker's policy writing.

This design system captures that restrained confidence — clean white pages, cobalt-blue calls to action, cool-grey card surfaces, and a typographic hierarchy that reads like a well-edited magazine built by cryptographers.

Signal 是一款非营利端到端加密通讯工具，它的品牌视觉把使命浓缩成一种颜色：Signal 钴蓝——既非 Facebook 蓝也非 Telegram 青，而是属于公共利益工具的专属蓝。白底大留白、对话气泡标识、Inter 字体、以及由现任主席 Meredith Whittaker 塑造的评论文体语气，构成了这个品牌的全部克制感。

本设计系统还原了那种「密码学家建造、非营利组织运营」的安静自信：纯白页面、钴蓝行动按钮、冷灰卡片表面，以及像一本精编杂志般的排版层次。