From 4e4298a32dfd8569e84f4fd0e51d1ba54f09af46 Mon Sep 17 00:00:00 2001
From: Connor Huffine <chuffine@gmail.com>
Date: Mon, 11 May 2026 00:08:57 -0400
Subject: [PATCH] Fix Humanoid Heisentest (#43919)

* Expand epsilon

* Increase epsilon slightly more

* Add more comment
---
 Content.Shared/Humanoid/SkinColorationPrototype.cs | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Content.Shared/Humanoid/SkinColorationPrototype.cs b/Content.Shared/Humanoid/SkinColorationPrototype.cs
index 86d83d9abf..6d4619ac2e 100644
--- a/Content.Shared/Humanoid/SkinColorationPrototype.cs
+++ b/Content.Shared/Humanoid/SkinColorationPrototype.cs
@@ -314,10 +314,10 @@ internal static class SkinColorationUtils
     public const float EpsilonHue = 0.00277f;
 
     /// <summary>
-    /// A value derived by dividing 1 by 256.
-    /// Due to the way these values are stored and deconstructed we can't expect much more precision than this..
+    /// Due to RGB colors being clamped to 8 bits, precision is lost during transformation to HSL or HSV.
+    /// The precision of the result is approximately 1/180.
     /// </summary>
-    public const float Epsilon = 0.00390625f;
+    public const float Epsilon = 0.0056f;
 
     /// <summary>
     /// Checks if a hue value is within a specified range, correctly handling ranges that wrap around 1.0 (e.g., reds).