diff --git a/src/app/gfx/snes_color.cc b/src/app/gfx/snes_color.cc
index 221477d7..8ca2e58e 100644
--- a/src/app/gfx/snes_color.cc
+++ b/src/app/gfx/snes_color.cc
@@ -39,9 +39,9 @@ uint16_t ConvertRgbToSnes(const snes_color& color) {
 
 uint16_t ConvertRgbToSnes(const ImVec4& color) {
   snes_color new_color;
-  new_color.red = color.x * kColorByteMax;
-  new_color.green = color.y * kColorByteMax;
-  new_color.blue = color.z * kColorByteMax;
+  new_color.red = static_cast<uint8_t>(color.x) * kColorByteMax;
+  new_color.green = static_cast<uint8_t>(color.y) * kColorByteMax;
+  new_color.blue = static_cast<uint8_t>(color.z) * kColorByteMax;
   return ConvertRgbToSnes(new_color);
 }
 
diff --git a/src/app/gfx/snes_color.h b/src/app/gfx/snes_color.h
index 35020a55..3adc862c 100644
--- a/src/app/gfx/snes_color.h
+++ b/src/app/gfx/snes_color.h
@@ -42,9 +42,9 @@ class SnesColor {
 
   constexpr explicit SnesColor(const ImVec4 val) : rgb_(val) {
     snes_color color;
-    color.red = val.x / kColorByteMax;
-    color.green = val.y / kColorByteMax;
-    color.blue = val.z / kColorByteMax;
+    color.red = static_cast<uint8_t>(val.x) / kColorByteMax;
+    color.green = static_cast<uint8_t>(val.y) / kColorByteMax;
+    color.blue = static_cast<uint8_t>(val.z) / kColorByteMax;
     snes_ = ConvertRgbToSnes(color);
   }