Slack theme generator

Turn any five-role color scheme into a custom Slack theme. Slack sidebar themes are a single comma-separated string of eight hex colors — column background, hover, active item, active item text, hover item, text, presence indicator, and mention badge — and this export derives all eight from the scheme’s roles.

The primary color drives the sidebar, the accent marks the active channel and mention badges, and the presence dot uses the palette’s green so online status still reads instantly.

Open the Studio → make your own free · no signup · exports as slack-theme.txt

How to install

  1. Generate a scheme in the Studio, open the Themes tab, select Slack
  2. Copy the color string (the first line of the export)
  3. In Slack: Preferences → Themes → scroll to "Custom theme" and expand it
  4. Paste the string — the sidebar updates immediately

Example Slack themes

Generated from curated schemes — open one in the Studio to tweak it, or copy the export as-is.

Chalkboard

Open in Studio → 
#183028,#11221c,#e9b44c,#f9f7f0,#2e5e4e,#f9f7f0,#3ea33e,#e9b44c

(Paste in Slack → Preferences → Themes → Custom theme)

Study Hall

Open in Studio → 
#293347,#1a202d,#c98d3c,#faf6ec,#4a5d82,#faf6ec,#3ea33e,#c98d3c

(Paste in Slack → Preferences → Themes → Custom theme)

Also export for

Omarchy · Ghostty · VS Code · Base16 · Windows Terminal · iTerm2 · Alacritty · Kitty · Xresources