London Theme for Slack

The premium Codigrate London theme for Slack. Add it to your cart, pay once, download it right away; install steps included.

Inspired by London at dusk, this dark theme rests on a slate grey base washed with twilight indigo, then lights it with the pillar box red of a K6 telephone box and the muted steel blue of the Thames. The calm grey surface keeps long sessions easy on the eyes while the red accents mark what matters.

A dark theme from the Codigrate Cities collection, released 2026-08-25. Tags: Royal, Atmospheric, Steel.

Sold on codigrate.com for $0.99, one payment, tax included: add it to your cart, pay with Stripe (cards, Apple Pay, Google Pay), and download the theme right away. No account needed. Personal licence; a digital download, so all sales are final (see the terms of sale).

London theme for Slack, a screenshot

Getting started on Slack

  1. Download the zip with the Download button. Inside is a small text file with the theme's four colors on one line.
  2. Open the text file and copy that line.
  3. In Slack, open Preferences → Themes, scroll to the bottom and paste the line into the custom theme field.
  4. In Preferences → Appearance, choose Light or Dark mode to match the theme; in Dark mode, turn on Darker sidebars.
  5. If you switch between light and dark mode, restart Slack so the theme applies correctly.
  6. Slack applies the theme instantly across the workspace.

London color palette

Every named color of the London palette, free to download for MacOS, CorelDRAW and Figma.

London on every platform

Codigrate

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