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diff --git a/dislike/DislikeAnalyzer.java b/dislike/DislikeAnalyzer.java
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+/*
+ * Copyright 2022 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package com.google.ux.material.libmonet.dislike;
+
+import com.google.ux.material.libmonet.hct.Hct;
+
+/**
+ * Check and/or fix universally disliked colors.
+ *
+ * <p>Color science studies of color preference indicate universal distaste for dark yellow-greens,
+ * and also show this is correlated to distate for biological waste and rotting food.
+ *
+ * <p>See Palmer and Schloss, 2010 or Schloss and Palmer's Chapter 21 in Handbook of Color
+ * Psychology (2015).
+ */
+public final class DislikeAnalyzer {
+
+  private DislikeAnalyzer() {
+    throw new UnsupportedOperationException();
+  }
+
+  /**
+   * Returns true if color is disliked.
+   *
+   * <p>Disliked is defined as a dark yellow-green that is not neutral.
+   */
+  public static boolean isDisliked(Hct hct) {
+    final boolean huePasses = Math.round(hct.getHue()) >= 90.0 && Math.round(hct.getHue()) <= 111.0;
+    final boolean chromaPasses = Math.round(hct.getChroma()) > 16.0;
+    final boolean tonePasses = Math.round(hct.getTone()) < 65.0;
+
+    return huePasses && chromaPasses && tonePasses;
+  }
+
+  /** If color is disliked, lighten it to make it likable. */
+  public static Hct fixIfDisliked(Hct hct) {
+    if (isDisliked(hct)) {
+      return Hct.from(hct.getHue(), hct.getChroma(), 70.0);
+    }
+
+    return hct;
+  }
+}