Signal - プライベートメッセンジャー

Why this icon holds up

On 2026-08-13 the vault captured the Signal - プライベートメッセンジャー icon (Social Networking, BR): 图标底板为蓝色，中间是一个白色的圆形，由白色轮廓线勾勒出。

No earlier vault capture exists yet, so this dated page is the baseline for future diffs.

Tagged as illustration · calm.

Small-size readability

• Contrast: white mark on blue fill — check both dim OLED and bright LCD.
• Silhouette budget: 圆形, 轮廓线 should remain readable after the store’s rounded-square crop.
• illustration/light detail collapses quickly below ~60px — verify the 60px mental model before trusting the master.
• Internal usability score for this capture: 0.6/100 (heuristic, not a store ranking).

These checks are practical references for designers reviewing Signal - プライベートメッセンジャー, not authoritative store scores.

Transferable design moves

• Keep 圆形 as the primary silhouette before adding secondary ornaments.
• Concentrate the loudest chroma on the identifying shape (white), not the whole blue field.
• This capture’s illustration/light vocabulary transfers best when the same restraint is applied at export size.