diff --git a/src/styles.cr b/src/styles.cr
index 08dba64..9b2686d 100644
--- a/src/styles.cr
+++ b/src/styles.cr
@@ -173,17 +173,19 @@ module Tartrazine
 
     # If the color is dark, make it brighter and viceversa
     def self.make_highlight_color(base_color)
+      # FIXME: do a proper luminance adjustment in the color class
       return nil if base_color.nil?
       color = Color.new(base_color.hex)
       if base_color.light?
-        color.r = [(base_color.r / 1.2), 255].min.to_u8
-        color.g = [(base_color.g / 1.2), 255].min.to_u8
-        color.b = [(base_color.b / 1.2), 255].min.to_u8
+        color.r = [(base_color.r - 40), 255].min.to_u8
+        color.g = [(base_color.g - 40), 255].min.to_u8
+        color.b = [(base_color.b - 40), 255].min.to_u8
       else
-        color.r = [(base_color.r * 1.2), 255].min.to_u8
-        color.g = [(base_color.g * 1.2), 255].min.to_u8
-        color.b = [(base_color.b * 1.2), 255].min.to_u8
+        color.r = [(base_color.r + 40), 255].min.to_u8
+        color.g = [(base_color.g + 40), 255].min.to_u8
+        color.b = [(base_color.b + 40), 255].min.to_u8
       end
+      # Bug in color, setting rgb doesn't update hex
       color.hex = "#{color.r.to_s(16)}#{color.g.to_s(16)}#{color.b.to_s(16)}"
       color
     end