Ocean Theme for Firefox

Inspired by the deep and tranquil world of the ocean, this dark theme seamlessly blends layered dark teal tones with soft cyan highlights and subtle bioluminescent accents. This balanced palette offers a calm and immersive backdrop, ensuring an optimal and focused coding experience.

A dark theme from the Codigrate Nature collection, released 2025-12-27. Tags: Deep, Tranquil, Immersive.

Sold on codigrate.com for .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).

Getting started on Firefox

1. Open the theme's Firefox Add-ons page with the Go to store button.
2. Click Add to Firefox and confirm in the prompt that opens.
3. The theme applies at once: the tabs, the toolbar and the address bar take its colors, no restart.
4. Want another look later? Open Add-ons and themes ( Cmd+Shift+A on a Mac, Ctrl+Shift+A on Windows and Linux ) → Themes and enable another theme; switch back the same way any time.

Ocean color palette

• #1C4247
• #5AB590
• #3FB4D8
• #DC7783
• #EAC089

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

Ocean on every platform

• Ocean for JetBrains
• Ocean for Xcode ($2.99)
• Ocean for Zed (.99)
• Ocean for Firefox (.99), this page
• Ocean for Sublime Text (.99)
• Ocean for MacOS Terminal (.99)
• Ocean for iTerm2 (.99)
• Ocean for Ghostty (.99)
• Ocean for Rhino (.99)
• Ocean for Slack ($0.99)
• Ocean for Line

From the blog

• Anatomy of a Dark Theme: Ocean: Anatomy of Ocean, a dark IDE theme: deep teal water lit by bioluminescent cyan, with the coral, anemone pink and sandbar gold of a reef in a diver's light.