diff --git a/runtime/themes/ashen.toml b/runtime/themes/ashen.toml
new file mode 100644
index 000000000..d31e6974e
--- /dev/null
+++ b/runtime/themes/ashen.toml
@@ -0,0 +1,191 @@
+# Ashen for Helix
+# -------------------
+# Author: Daniel Fichtinger <daniel@ficd.ca>
+# License: MIT License
+# Upstream: https://sr.ht/~ficd/ashen
+# -------------------
+# Sections:
+# - Syntax highlighting
+# - User interface
+# - Palette
+
+# Syntax highlighting
+# -------------------
+"attribute" = "g_4"
+
+"type" = "blue"
+"type.builtin" = "blue"
+"type.parameter" = "orange_glow"
+"type.enum.variant" = "orange_blaze"
+
+"constructor" = "g_1"
+
+"constant" = "orange_blaze"
+"constant.builtin" = "blue"
+"constant.character" = { fg = "red_glowing", modifiers = ["bold"] }
+"constant.character.escape" = "g_2"
+"constant.numeric" = "blue"
+
+"string" = "red_glowing"
+"string.regexp" = "orange_glow"
+"string.special" = "g_2"
+"string.special.url" = { fg = "red_glowing", modifiers = ["bold"] }
+"string.special.path" = { fg = "red_glowing", modifiers = ["bold"] }
+"string.special.symbol" = "orange_smolder"
+
+"comment" = { fg = "g_6", modifiers = ["italic"] }
+"comment.block.documentation" = { fg = "g_5", modifiers = ["italic"] }
+
+"variable" = "g_3"
+"variable.parameter" = { fg = "g_2", modifiers = ["italic"] }
+"variable.builtin" = "blue"
+"variable.other.member" = { fg = "g_2" }
+
+"label" = "red_ember" # used for lifetimes
+
+"punctuation" = "g_2"
+"punctuation.special" = "orange_golden"
+"punctuation.bracket" = "g_6"
+"punctuation.delimiter" = "orange_smolder"
+
+
+"keyword" = "red_ember"
+"keyword.operator" = "orange_blaze"
+"keyword.directive" = { fg = "red_ember", modifiers = ["italic"] }
+"keyword.storage.modifier" = { fg = "red_ember", modifiers = ["italic"] }
+
+"operator" = "orange_glow"
+
+"function" = { fg = "g_3", modifiers = ["bold"] }
+"function.builtin" = { fg = "g_3", modifiers = ["bold", "italic"] }
+"function.macro" = "red_ember"
+
+"tag" = { fg = "orange_glow", modifiers = ["italic"] }
+
+"namespace" = { fg = "orange_glow", modifiers = ["bold"] }
+
+"special" = "orange_smolder" # fuzzy highlight
+
+"markup.heading" = { fg = "red_glowing", modifiers = ["bold"] }
+"markup.list" = "orange_glow"
+"markup.bold" = { modifiers = ["bold"] }
+"markup.italic" = { modifiers = ["italic"] }
+"markup.link.url" = { fg = "red_glowing", modifiers = ["italic", "underlined"] }
+"markup.link.text" = "red_ember"
+"markup.raw" = { fg = "g_2", bg = "g_10" }
+"markup.quote" = { modifiers = ["italic"] }
+
+"diff.plus" = "g_6"
+"diff.minus" = "red_ember"
+"diff.delta" = "brown"
+
+# User Interface
+# --------------
+"ui.background" = { fg = "text", bg = "background" }
+
+"ui.linenr" = { fg = "g_8" }
+"ui.linenr.selected" = { fg = "g_6" }
+
+"ui.statusline" = { fg = "g_3", bg = "g_9" }
+"ui.statusline.inactive" = { fg = "g_5", bg = "g_10" }
+"ui.statusline.normal" = { fg = "background", bg = "orange_blaze", modifiers = [
+  "bold",
+] }
+"ui.statusline.insert" = { fg = "g_1", bg = "g_7", modifiers = ["bold"] }
+"ui.statusline.select" = { fg = "background", bg = "orange_golden", modifiers = [
+  "bold",
+] }
+
+"ui.popup" = { fg = "text", bg = "g_10" }
+"ui.info" = { fg = "orange_blaze", bg = "g_10" }
+"ui.window" = { fg = "g_7" }
+"ui.help" = { fg = "text", bg = "g_10", modifiers = ["bold"] }
+
+"ui.bufferline" = { fg = "text", bg = "background" }
+"ui.bufferline.active" = { fg = "g_2", bg = "g_10", underline = { color = "orange_blaze", style = "line" } }
+"ui.bufferline.background" = { bg = "background" }
+
+"ui.text" = "text"
+"ui.text.focus" = { fg = "g_2", bg = "g_10", underline = { color = "red_ember", style = "line" }, modifiers = [
+  "bold",
+] }
+"ui.text.inactive" = { fg = "g_7" }
+"ui.text.directory" = { fg = "red_ember" }
+
+"ui.virtual" = "g_5"
+"ui.virtual.ruler" = { bg = "cursorline" }
+"ui.virtual.whitespace" = "g_7"
+"ui.virtual.indent-guide" = "g_7"
+"ui.virtual.wrap" = "g_7"
+"ui.virtual.inlay-hint" = { fg = "g_6", modifiers = ["italic"] }
+"ui.virtual.jump-label" = { fg = "background", bg = "orange_blaze", modifiers = [
+  "bold",
+] }
+
+"ui.selection" = { bg = "brown_dark" }
+
+"ui.cursor.normal" = { fg = "background", bg = "orange_muted" }
+"ui.cursor.insert" = { fg = "background", bg = "g_7" }
+"ui.cursor.select" = { fg = "background", bg = "golden_muted" }
+"ui.cursor.primary.normal" = { fg = "background", bg = "orange_blaze", modifiers = [
+  "bold",
+] }
+"ui.cursor.primary.insert" = { fg = "background", bg = "g_3", modifiers = [
+  "bold",
+] }
+"ui.cursor.primary.select" = { fg = "background", bg = "orange_golden", modifiers = [
+  "bold",
+] }
+"ui.cursor.match" = { fg = "orange_smolder", modifiers = ["underlined"] }
+
+"ui.cursorline.primary" = { bg = "cursorline" }
+"ui.cursorline" = { bg = "g_12" }
+
+"ui.highlight" = { fg = "orange_blaze", bg = "cursorline", underline = { color = "red_ember", style = "line" }, modifiers = [
+  "bold",
+] }
+
+"ui.menu" = { fg = "g_2", bg = "g_10" }
+"ui.menu.selected" = { fg = "background", bg = "orange_blaze", modifiers = [
+  "bold",
+] }
+
+"diagnostic.error" = { underline = { color = "red_flame", style = "curl" } }
+"diagnostic.warning" = { underline = { color = "orange_golden", style = "curl" } }
+"diagnostic.info" = { underline = { color = "g_4", style = "dotted" } }
+"diagnostic.hint" = { underline = { color = "g_5", style = "dotted" } }
+"diagnostic.unnecessary" = { modifiers = ["dim"] }
+
+error = { fg = "red_flame", bg = "g_10" }
+warning = { fg = "orange_golden", bg = "g_10" }
+info = { fg = "g_2", bg = "g_10" }
+hint = { fg = "g_4", bg = "g_10" }
+
+[palette]
+cursorline = "#191919"
+text = "#b4b4b4"
+red_flame = "#C53030"
+red_glowing = "#DF6464"
+red_ember = "#B14242"
+orange_glow = "#D87C4A"
+orange_blaze = "#C4693D"
+orange_muted = "#6D3B22"
+orange_smolder = "#E49A44"
+orange_golden = "#E5A72A"
+golden_muted = "#6D4D0D"
+brown = "#89492a"
+brown_dark = "#322119"
+blue = "#4A8B8B"
+background = "#121212"
+g_1 = "#e5e5e5"
+g_2 = "#d5d5d5"
+g_3 = "#b4b4b4"
+g_4 = "#a7a7a7"
+g_5 = "#949494"
+g_6 = "#737373"
+g_7 = "#535353"
+g_8 = "#323232"
+g_9 = "#212121"
+g_10 = "#1d1d1d"
+g_11 = "#191919"
+g_12 = "#151515"
diff --git a/runtime/themes/licenses/ashen.license b/runtime/themes/licenses/ashen.license
new file mode 100644
index 000000000..fe85aede7
--- /dev/null
+++ b/runtime/themes/licenses/ashen.license
@@ -0,0 +1,22 @@
+MIT License
+
+Copyright (c) 2025 Daniel Fichtinger
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+