diff --git a/tildes/scss/styles.scss b/tildes/scss/styles.scss
index 0eb36d1..d32e0df 100644
--- a/tildes/scss/styles.scss
+++ b/tildes/scss/styles.scss
@@ -40,4 +40,5 @@
 @import 'themes/default';
 @import 'themes/black';
 @import 'themes/dracula';
+@import 'themes/atom_one_dark';
 @import 'themes/solarized';
diff --git a/tildes/scss/themes/_atom_one_dark.scss b/tildes/scss/themes/_atom_one_dark.scss
new file mode 100644
index 0000000..bd85fe3
--- /dev/null
+++ b/tildes/scss/themes/_atom_one_dark.scss
@@ -0,0 +1,39 @@
+// Colours from Atom One Dark Syntax: https://github.com/atom/atom/blob/master/packages/one-dark-syntax/styles/colors.less
+
+$background: hsl(220, 13%, 18%);
+$background-alt: #21242b;
+$foreground-alt: hsl(220, 14%, 71%);
+$foreground: lighten($foreground, 10%);
+
+$cyan: hsl(187, 47%, 55%);
+$blue: hsl(207, 82%, 66%);
+$purple: hsl(286, 60%, 67%);
+$green: hsl( 95, 38%, 62%);
+$red: hsl(355, 65%, 65%);
+$orange: hsl( 29, 54%, 61%);
+
+$theme-atom-one-dark: (
+  "alert": $orange,
+  "background-primary": $background,
+  "background-secondary": $background-alt,
+  "comment-label-exemplary": $blue,
+  "comment-label-joke": $green,
+  "comment-label-noise": $orange,
+  "comment-label-offtopic": $cyan,
+  "comment-label-malice": $red,
+  "error": $red,
+  "foreground-primary": $foreground,
+  "foreground-secondary": $foreground-alt,
+  "foreground-highlight": $foreground,
+  "link": $blue,
+  "link-visited": $purple,
+  "stripe-mine": $purple,
+  "stripe-target": $orange,
+  "topic-tag-nsfw": $red,
+  "topic-tag-spoiler": $orange,
+  "warning": $orange,
+);
+
+body.theme-atom-one-dark {
+  @include use-theme($theme-atom-one-dark);
+}
\ No newline at end of file
diff --git a/tildes/tildes/templates/base.jinja2 b/tildes/tildes/templates/base.jinja2
index 9c19f8b..0324cfd 100644
--- a/tildes/tildes/templates/base.jinja2
+++ b/tildes/tildes/templates/base.jinja2
@@ -16,6 +16,8 @@
   <meta name="theme-color" content="#073642">
   {% elif request.cookies.get("theme", "") == "dracula" %}
   <meta name="theme-color" content="#282a36">
+  {% elif request.cookies.get("theme", "") == "atom-one-dark" %}
+  <meta name="theme-color" content="#282c34">
   {% elif request.cookies.get('theme', '') == 'black' %}
   <meta name="theme-color" content="#222">
   {% endif %}
@@ -102,6 +104,7 @@
             ("light", "Solarized Light"),
             ("dark", "Solarized Dark"),
             ("dracula", "Dracula"),
+            ("atom-one-dark", "Atom One Dark"),
             ("black", "Black")) %}
         <option value="{{ theme }}"
           {{ 'selected' if theme == request.cookies.get("theme", "white") else '' }}
diff --git a/tildes/tildes/views/settings.py b/tildes/tildes/views/settings.py
index 3ade015..9b44fe1 100644
--- a/tildes/tildes/views/settings.py
+++ b/tildes/tildes/views/settings.py
@@ -33,6 +33,7 @@ def get_settings(request: Request) -> dict:
         "light": "Solarized Light",
         "dark": "Solarized Dark",
         "dracula": "Dracula",
+        "atom-one-dark": "Atom One Dark",
         "black": "Black",
     }