From aa420266a1e107ec54dcdffaa53b5734804d751c Mon Sep 17 00:00:00 2001
From: "google-labs-jules[bot]"
 <161369871+google-labs-jules[bot]@users.noreply.github.com>
Date: Fri, 6 Mar 2026 06:36:46 +0000
Subject: [PATCH] =?UTF-8?q?=F0=9F=A7=B9=20[Code=20Health]=20Simplify=20adj?=
 =?UTF-8?q?ustAccentColor=20function=20in=20color.ts?=
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Co-authored-by: is0692vs <135803462+is0692vs@users.noreply.github.com>
---
 src/lib/color.ts | 45 +++++++++++++++++++++++++++++----------------
 1 file changed, 29 insertions(+), 16 deletions(-)

diff --git a/src/lib/color.ts b/src/lib/color.ts
index 02ab06b..a7b65e6 100644
--- a/src/lib/color.ts
+++ b/src/lib/color.ts
@@ -1,4 +1,4 @@
-import { colord, extend } from "colord";
+import { colord, extend, type Colord } from "colord";
 import mixPlugin from "colord/plugins/mix";
 import namesPlugin from "colord/plugins/names";
 import a11yPlugin from "colord/plugins/a11y";
@@ -21,13 +21,10 @@ const TARGET_MIN_LIGHTNESS = 45;
 const TARGET_MAX_LIGHTNESS = 85;
 const HOVER_LIGHTEN_AMOUNT = 0.1;
 
-/**
- * Adjusts the given color to be suitable for use as an accent color in a dark theme.
- * Ensures sufficient saturation and appropriate lightness.
- * @param color Hex string or RGB object/array
- */
-export function adjustAccentColor(color: string | [number, number, number] | { r: number; g: number; b: number }): ColorResult {
-  let c;
+type ColorInput = string | [number, number, number] | { r: number; g: number; b: number };
+
+function parseColor(color: ColorInput): Colord {
+  let c: Colord;
 
   if (Array.isArray(color)) {
     c = colord({ r: color[0], g: color[1], b: color[2] });
@@ -37,27 +34,43 @@ export function adjustAccentColor(color: string | [number, number, number] | { r
 
   // Ensure valid color, fallback to default blue if invalid
   if (!c.isValid()) {
-    c = colord(DEFAULT_ACCENT_COLOR);
+    return colord(DEFAULT_ACCENT_COLOR);
   }
 
-  // Adjust saturation: if too low, saturate
+  return c;
+}
+
+function ensureSaturation(c: Colord): Colord {
   const s = c.toHsl().s;
   if (s < MIN_SATURATION_FOR_HIGH_BOOST) {
-    c = c.saturate(HIGH_SATURATION_BOOST);
+    return c.saturate(HIGH_SATURATION_BOOST);
   } else if (s < MIN_SATURATION_FOR_LOW_BOOST) {
-    c = c.saturate(LOW_SATURATION_BOOST);
+    return c.saturate(LOW_SATURATION_BOOST);
   }
+  return c;
+}
 
-  // Adjust lightness for dark mode context
-  // Should be bright enough to glow, but not white
+function adjustLightness(c: Colord): Colord {
   const l = c.toHsl().l;
   if (l < TARGET_MIN_LIGHTNESS) {
     // Lift to at least TARGET_MIN_LIGHTNESS
-    c = c.lighten((TARGET_MIN_LIGHTNESS - l) / 100);
+    return c.lighten((TARGET_MIN_LIGHTNESS - l) / 100);
   } else if (l > TARGET_MAX_LIGHTNESS) {
     // Dim to at most TARGET_MAX_LIGHTNESS
-    c = c.darken((l - TARGET_MAX_LIGHTNESS) / 100);
+    return c.darken((l - TARGET_MAX_LIGHTNESS) / 100);
   }
+  return c;
+}
+
+/**
+ * Adjusts the given color to be suitable for use as an accent color in a dark theme.
+ * Ensures sufficient saturation and appropriate lightness.
+ * @param color Hex string or RGB object/array
+ */
+export function adjustAccentColor(color: string | [number, number, number] | { r: number; g: number; b: number }): ColorResult {
+  let c = parseColor(color);
+  c = ensureSaturation(c);
+  c = adjustLightness(c);
 
   const hex = c.toHex();
   const rgb = c.toRgb();