diff --git a/layout/svg/SVGImageContext.h b/layout/svg/SVGImageContext.h
index 159d9cbbd0711076ee6c2a71a3da04bd92a0102c..daefc40590c4d7d7fac9db25c6ec4ba2424dded5 100644
--- a/layout/svg/SVGImageContext.h
+++ b/layout/svg/SVGImageContext.h
@@ -6,6 +6,7 @@
 #define LAYOUT_SVG_SVGIMAGECONTEXT_H_
 
 #include "Units.h"
+#include "nsColor.h"
 #include "mozilla/Maybe.h"
 #include "mozilla/SVGContextPaint.h"
 #include "mozilla/SVGPreserveAspectRatio.h"
@@ -63,6 +64,11 @@ class SVGImageContext {
                                      nsISVGPaintContext* aPaintContext,
                                      imgIContainer* aImgContainer);
 
+  // Carry the host document's Zen boost into the image context so the image
+  // renders with the same accent/inversion as the page.
+  static void MaybeStoreZenBoosts(SVGImageContext& aContext,
+                                  const nsPresContext& aPresContext);
+
   const Maybe<CSSIntSize>& GetViewportSize() const { return mViewportSize; }
 
   void SetViewportSize(const Maybe<CSSIntSize>& aSize) {
@@ -75,6 +81,21 @@ class SVGImageContext {
     mColorScheme = aScheme;
   }
 
+  // Zen boosts state carried from the host document so the image renders with
+  // the same boost. Part of the cache key below so boosted and unboosted
+  // renderings don't collide.
+  void SetZenBoosts(nscolor aAccent, float aComplementaryRotation,
+                    bool aInverted) {
+    mZenBoostsAccent = aAccent;
+    mZenBoostsComplementaryRotation = aComplementaryRotation;
+    mZenBoostsInverted = aInverted;
+  }
+  nscolor GetZenBoostsAccent() const { return mZenBoostsAccent; }
+  float GetZenBoostsComplementaryRotation() const {
+    return mZenBoostsComplementaryRotation;
+  }
+  bool GetZenBoostsInverted() const { return mZenBoostsInverted; }
+
   const Maybe<SVGPreserveAspectRatio>& GetPreserveAspectRatio() const {
     return mPreserveAspectRatio;
   }
@@ -107,7 +128,11 @@ class SVGImageContext {
 
     return contextPaintIsEqual && mViewportSize == aOther.mViewportSize &&
            mPreserveAspectRatio == aOther.mPreserveAspectRatio &&
-           mColorScheme == aOther.mColorScheme;
+           mColorScheme == aOther.mColorScheme &&
+           mZenBoostsAccent == aOther.mZenBoostsAccent &&
+           mZenBoostsComplementaryRotation ==
+               aOther.mZenBoostsComplementaryRotation &&
+           mZenBoostsInverted == aOther.mZenBoostsInverted;
   }
 
   bool operator!=(const SVGImageContext&) const = default;
@@ -119,7 +144,9 @@ class SVGImageContext {
     }
     return HashGeneric(hash, mViewportSize.map(HashSize).valueOr(0),
                        mPreserveAspectRatio.map(HashPAR).valueOr(0),
-                       mColorScheme.map(HashColorScheme).valueOr(0));
+                       mColorScheme.map(HashColorScheme).valueOr(0),
+                       mZenBoostsAccent, mZenBoostsComplementaryRotation,
+                       mZenBoostsInverted);
   }
 
  private:
@@ -138,6 +165,9 @@ class SVGImageContext {
   Maybe<CSSIntSize> mViewportSize;
   Maybe<SVGPreserveAspectRatio> mPreserveAspectRatio;
   Maybe<ColorScheme> mColorScheme;
+  nscolor mZenBoostsAccent = 0;
+  float mZenBoostsComplementaryRotation = 0.0f;
+  bool mZenBoostsInverted = false;
 };
 
 }  // namespace mozilla