Render one mobile app icon alone, centered on a plain neutral background with a soft shadow beneath it. Use a standard iOS and Android rounded-square shape with a full-bleed background in the Primary Color and no inner border or frame. Place the Central Symbol in the center, filling roughly 60 to 70 percent of the icon with even padding. Use the Secondary Color for the symbol and keep its silhouette bold, simple and instantly legible at 48 pixels. Use a flat vector style with clean geometry, crisp edges and no glossy effects, texture or busy detail. Limit the palette to the Primary Color, Secondary Color and white if needed. Include no text, labels, extra symbols, real logos, trademarked characters or watermark.
Use these details:
Central Symbol: "three ascending bar columns"
Primary Color: "dark navy"
Secondary Color: "fresh green"
Using your own logo, product or face? Attach it in the chat and say which of the details it replaces.
Your result will come out close to the example rather than identical to it. Change the details to make it yours.
