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The Slack logo top-left with a desktop "#announcements" window and an overlapping phone "#project-unicorn" view on a deep purple aubergine background.
Summary
The white Slack logo sits top-left over Slack's signature aubergine-purple background, with a desktop "#announcements" channel window on the right and a phone showing "#project-unicorn" overlapping its lower-left corner.
Visual description
Deep aubergine-purple field with a darker rounded rectangle glow behind the product art. Top-left corner holds the multicolor Slack mark and "slack" wordmark in white. The right side shows a desktop app window for "# announcements": a message from "Lisa Zhang / What a fantastic quarter!" with a video thumbnail, a "34 replies" link and stacked reply avatars, plus a member-count and composer bar. Overlapping its lower-left is an angled smartphone displaying a "# project-unicorn" thread with two short messages, an attachment, and emoji reactions, implying desktop-plus-mobile parity.
Key takeaway
Slack's ownable aubergine ground instantly signals the brand before you read a word. Overlapping a phone over the corner of a desktop window is a compact way to say "works everywhere" without two separate mockups competing for space.
Reuse notes
Use when brand-color recognition is the priority and you want to show cross-device use. Relies on a strong, single brand background and clean, legible UI captures; keep the phone overlap from hiding key desktop content. The dark ground makes the white logo and UI pop but limits accent flexibility.
