diff --git a/Scripts/python/src/theming/lib/theme.py b/Scripts/python/src/theming/lib/theme.py
index adbc9d29e..871dfc8c5 100644
--- a/Scripts/python/src/theming/lib/theme.py
+++ b/Scripts/python/src/theming/lib/theme.py
@@ -326,14 +326,15 @@ def generate_normal_light(palette: list[Color]) -> dict[str, str]:
     error = find_error_color(palette)
 
     # Keep colors vibrant - darken for visibility on light bg
+    # Clamp lightness to [0.25, 0.45] so colors are never near-black nor washed out
     h, s, l = primary.to_hsl()
-    primary_adjusted = Color.from_hsl(h, max(s, 0.7), min(l, 0.45))
+    primary_adjusted = Color.from_hsl(h, max(s, 0.7), max(min(l, 0.45), 0.25))
 
     h, s, l = secondary.to_hsl()
-    secondary_adjusted = Color.from_hsl(h, max(s, 0.6), min(l, 0.40))
+    secondary_adjusted = Color.from_hsl(h, max(s, 0.6), max(min(l, 0.40), 0.22))
 
     h, s, l = tertiary.to_hsl()
-    tertiary_adjusted = Color.from_hsl(h, max(s, 0.5), min(l, 0.35))
+    tertiary_adjusted = Color.from_hsl(h, max(s, 0.5), max(min(l, 0.35), 0.20))
 
     # Container colors - lighter, less saturated versions of accent colors for light mode
     def make_container_light(base: Color) -> Color: