diff --git a/CONTRIBUTORS b/CONTRIBUTORS
index 7064c6885..95c98a47f 100644
--- a/CONTRIBUTORS
+++ b/CONTRIBUTORS
@@ -234,6 +234,10 @@ Spiritual Father <https://github.com/spiritualfather>
 Emmanuel Ferdman <https://github.com/emmanuel-ferdman>
 Sunong2008 <https://github.com/Sunrongguo2008>
 Marvin Kopf <marvinkopf@outlook.com>
+David Brenn <davidbrenn@t-online.de>
+Felix Kühne <flxkhn0602@gmail.com>
+Matthis Ehrhardt <matthis-ehrhardt@gmx.de>
+Billy Julian Lesmana <hunter140797@gmail.com>
 Kevin Nakamura <grinkers@grinkers.net>
 Bradley Szoke <bradleyszoke@gmail.com>
 jcznk <https://github.com/jcznk>
diff --git a/ftl/core/preferences.ftl b/ftl/core/preferences.ftl
index 23b72f267..e7a20b36c 100644
--- a/ftl/core/preferences.ftl
+++ b/ftl/core/preferences.ftl
@@ -60,6 +60,7 @@ preferences-full-screen-only = Full screen only
 preferences-appearance = Appearance
 preferences-general = General
 preferences-style = Style
+preferences-color-blind = Color Blind Mode
 preferences-review = Review
 preferences-answer-keys = Answer keys
 preferences-distractions = Distractions
diff --git a/qt/aqt/forms/preferences.ui b/qt/aqt/forms/preferences.ui
index 0035e1f42..9df416d8e 100644
--- a/qt/aqt/forms/preferences.ui
+++ b/qt/aqt/forms/preferences.ui
@@ -104,6 +104,23 @@
           <string>preferences_user_interface</string>
          </property>
          <layout class="QGridLayout" name="gridLayout_2">
+          <item row="1" column="0">
+           <widget class="QLabel" name="styleLabel">
+            <property name="text">
+             <string>preferences_style</string>
+            </property>
+            <property name="buddy">
+             <cstring>styleComboBox</cstring>
+            </property>
+           </widget>
+          </item>
+          <item row="1" column="1">
+           <widget class="QComboBox" name="styleComboBox">
+            <property name="currentText">
+             <string/>
+            </property>
+           </widget>
+          </item>
           <item row="0" column="1">
            <widget class="QComboBox" name="theme"/>
           </item>
@@ -123,23 +140,6 @@
             </property>
            </widget>
           </item>
-          <item row="1" column="1">
-           <widget class="QComboBox" name="styleComboBox">
-            <property name="currentText">
-             <string/>
-            </property>
-           </widget>
-          </item>
-          <item row="1" column="0">
-           <widget class="QLabel" name="styleLabel">
-            <property name="text">
-             <string>preferences_style</string>
-            </property>
-            <property name="buddy">
-             <cstring>styleComboBox</cstring>
-            </property>
-           </widget>
-          </item>
           <item row="0" column="0">
            <widget class="QLabel" name="themeLabel">
             <property name="text">
@@ -160,13 +160,26 @@
             </property>
            </widget>
           </item>
-          <item row="3" column="0" colspan="2">
+          <item row="4" column="0" colspan="2">
            <widget class="QPushButton" name="resetWindowSizes">
             <property name="text">
              <string>preferences_reset_window_sizes</string>
             </property>
            </widget>
           </item>
+          <item row="3" column="0">
+           <widget class="QCheckBox" name="color_blind">
+            <property name="sizePolicy">
+             <sizepolicy hsizetype="Fixed" vsizetype="Fixed">
+              <horstretch>0</horstretch>
+              <verstretch>0</verstretch>
+             </sizepolicy>
+            </property>
+            <property name="text">
+             <string>preferences_color_blind</string>
+            </property>
+           </widget>
+          </item>
          </layout>
         </widget>
        </item>
diff --git a/qt/aqt/preferences.py b/qt/aqt/preferences.py
index afce6d489..4037b8240 100644
--- a/qt/aqt/preferences.py
+++ b/qt/aqt/preferences.py
@@ -371,11 +371,24 @@ class Preferences(QDialog):
         self.form.styleComboBox.setVisible(not is_win)
         qconnect(self.form.resetWindowSizes.clicked, self.on_reset_window_sizes)
 
+        self.form.color_blind.setChecked(self.mw.pm.color_blind())
+        qconnect(
+            self.form.color_blind.stateChanged, self.on_color_blind_checkbox_changed
+        )
+
         self.setup_language()
         self.setup_video_driver()
 
         self.setupOptions()
 
+    def on_color_blind_checkbox_changed(self, state: int) -> None:
+        if state == 2:
+            # checkbox is checked
+            self.mw.pm.set_color_blind(True)
+        else:
+            # checkbox is unchecked
+            self.mw.pm.set_color_blind(False)
+
     def update_global(self) -> None:
         restart_required = False
 
diff --git a/qt/aqt/profiles.py b/qt/aqt/profiles.py
index 919be170c..9d486d3e7 100644
--- a/qt/aqt/profiles.py
+++ b/qt/aqt/profiles.py
@@ -536,6 +536,12 @@ create table if not exists profiles
     def setUiScale(self, scale: float) -> None:
         self.meta["uiScale"] = scale
 
+    def set_color_blind(self, value: bool) -> None:
+        self.meta["color_blind"] = value
+
+    def color_blind(self) -> bool:
+        return self.meta.get("color_blind", False)
+
     def reduce_motion(self) -> bool:
         return self.meta.get("reduce_motion", True)
 
diff --git a/qt/aqt/stats.py b/qt/aqt/stats.py
index 0b8a8a3ee..4416bb988 100644
--- a/qt/aqt/stats.py
+++ b/qt/aqt/stats.py
@@ -136,10 +136,18 @@ class NewDeckStats(QDialog):
             _, query = cmd.split(":", 1)
             browser = aqt.dialogs.open("Browser", self.mw)
             browser.search_for(query)
-
         return False
 
     def refresh(self) -> None:
+        def on_load_finished(success: bool) -> None:
+            if success:
+                is_color_blind = self.mw.pm.color_blind()
+                js_code = f"window.colorBlindMode = {str(is_color_blind).lower()};"
+                self.form.web.eval(js_code)
+            # Disconnect after running once to avoid multiple triggers
+            self.form.web.page().loadFinished.disconnect(on_load_finished)
+
+        self.form.web.page().loadFinished.connect(on_load_finished)
         self.form.web.load_sveltekit_page("graphs")
 
 
diff --git a/ts/routes/graphs/TrueRetentionCombined.svelte b/ts/routes/graphs/TrueRetentionCombined.svelte
index 5a9efc814..419bb59e5 100644
--- a/ts/routes/graphs/TrueRetentionCombined.svelte
+++ b/ts/routes/graphs/TrueRetentionCombined.svelte
@@ -3,9 +3,9 @@ Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script lang="ts">
+    import { colorBlindColors } from "./graph-helpers";
     import * as tr from "@generated/ftl";
     import { localizedNumber } from "@tslib/i18n";
-
     import { type RevlogRange } from "./graph-helpers";
     import {
         calculateRetentionPercentageString,
@@ -13,6 +13,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         type PeriodTrueRetentionData,
         type RowData,
     } from "./true-retention";
+    import { onMount } from "svelte";
 
     interface Props {
         revlogRange: RevlogRange;
@@ -22,6 +23,21 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     const { revlogRange, data }: Props = $props();
 
     const rowData: RowData[] = $derived(getRowData(data, revlogRange));
+
+    // Default (non-colorblind) colors
+    let youngColor = "#64c476";
+    let matureColor = "#31a354";
+
+    onMount(() => {
+        const isColorBlindMode = (window as any).colorBlindMode;
+        if (isColorBlindMode) {
+            youngColor = colorBlindColors.young;
+            matureColor = colorBlindColors.mature;
+        }
+        // Set globally so scoped SCSS can use them
+        document.documentElement.style.setProperty("--young-color", youngColor);
+        document.documentElement.style.setProperty("--mature-color", matureColor);
+    });
 </script>
 
 <table>
@@ -84,11 +100,11 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     }
 
     .young {
-        color: #64c476;
+        color: var(--young-color);
     }
 
     .mature {
-        color: #31a354;
+        color: var(--mature-color);
     }
 
     .total {
diff --git a/ts/routes/graphs/TrueRetentionSingle.svelte b/ts/routes/graphs/TrueRetentionSingle.svelte
index 9199717f8..4855c3c15 100644
--- a/ts/routes/graphs/TrueRetentionSingle.svelte
+++ b/ts/routes/graphs/TrueRetentionSingle.svelte
@@ -3,6 +3,7 @@ Copyright: Ankitects Pty Ltd and contributors
 License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
 -->
 <script lang="ts">
+    import { colorBlindColors } from "./graph-helpers";
     import * as tr from "@generated/ftl";
     import { type RevlogRange } from "./graph-helpers";
     import {
@@ -15,6 +16,7 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
         type Scope,
     } from "./true-retention";
     import { localizedNumber } from "@tslib/i18n";
+    import { onMount } from "svelte";
 
     interface Props {
         revlogRange: RevlogRange;
@@ -25,6 +27,20 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     const { revlogRange, data, scope }: Props = $props();
 
     const rowData: RowData[] = $derived(getRowData(data, revlogRange));
+
+    let passColor = "#3bc464";
+    let failColor = "#c43b3b";
+
+    onMount(() => {
+        const isColorBlindMode = (window as any).colorBlindMode;
+        if (isColorBlindMode) {
+            passColor = colorBlindColors.relearn;
+            failColor = colorBlindColors.filtered;
+        }
+        // Apply them to document root so SCSS can see them
+        document.documentElement.style.setProperty("--pass-color", passColor);
+        document.documentElement.style.setProperty("--fail-color", failColor);
+    });
 </script>
 
 <table>
@@ -71,11 +87,11 @@ License: GNU AGPL, version 3 or later; http://www.gnu.org/licenses/agpl.html
     }
 
     .pass {
-        color: #3bc464;
+        color: var(--pass-color);
     }
 
     .fail {
-        color: #c43b3b;
+        color: var(--fail-color);
     }
 
     .retention {
diff --git a/ts/routes/graphs/added.ts b/ts/routes/graphs/added.ts
index f60bb03aa..d11ce24b9 100644
--- a/ts/routes/graphs/added.ts
+++ b/ts/routes/graphs/added.ts
@@ -8,7 +8,7 @@
 import type { GraphsResponse } from "@generated/anki/stats_pb";
 import * as tr from "@generated/ftl";
 import { dayLabel } from "@tslib/time";
-import type { Bin } from "d3";
+import { type Bin, interpolateViridis } from "d3";
 import { bin, interpolateBlues, min, scaleLinear, scaleSequential, sum } from "d3";
 
 import type { SearchDispatch, TableDatum } from "./graph-helpers";
@@ -80,8 +80,18 @@ export function buildHistogram(
         return [null, []];
     }
 
-    const adjustedRange = scaleLinear().range([0.7, 0.3]);
-    const colourScale = scaleSequential((n) => interpolateBlues(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    let adjustedRange;
+    let colourScale;
+    const isColourBlindMode = (window as any).colorBlindMode;
+
+    // Changing color based on mode
+    if (isColourBlindMode) {
+        adjustedRange = scaleLinear().range([0.3, 0.7]);
+        colourScale = scaleSequential((n) => interpolateViridis(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    } else {
+        adjustedRange = scaleLinear().range([0.7, 0.3]);
+        colourScale = scaleSequential((n) => interpolateBlues(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    }
 
     const totalInPeriod = sum(bins, accessor);
     const periodDays = Math.abs(xMin!);
diff --git a/ts/routes/graphs/buttons.ts b/ts/routes/graphs/buttons.ts
index 606380590..1af54e33b 100644
--- a/ts/routes/graphs/buttons.ts
+++ b/ts/routes/graphs/buttons.ts
@@ -12,6 +12,7 @@ import {
     axisBottom,
     axisLeft,
     interpolateRdYlGn,
+    interpolateViridis,
     pointer,
     scaleBand,
     scaleLinear,
@@ -20,7 +21,7 @@ import {
     sum,
 } from "d3";
 
-import type { GraphBounds } from "./graph-helpers";
+import { type GraphBounds } from "./graph-helpers";
 import { GraphRange } from "./graph-helpers";
 import { setDataAvailable } from "./graph-helpers";
 import { hideTooltip, showTooltip } from "./tooltip-utils.svelte";
@@ -162,7 +163,15 @@ export function renderButtons(
         .paddingOuter(1)
         .paddingInner(0.1);
 
-    const colour = scaleSequential(interpolateRdYlGn).domain([1, 4]);
+    const isColourBlindMode = (window as any).colorBlindMode;
+    let colour;
+
+    // Changing color based on mode
+    if (isColourBlindMode) {
+        colour = scaleSequential(interpolateViridis).domain([1, 4]);
+    } else {
+        colour = scaleSequential(interpolateRdYlGn).domain([1, 4]);
+    }
 
     // y scale
     const yTickFormat = (n: number): string => localizedNumber(n);
diff --git a/ts/routes/graphs/calendar.ts b/ts/routes/graphs/calendar.ts
index 863923095..f8048c7af 100644
--- a/ts/routes/graphs/calendar.ts
+++ b/ts/routes/graphs/calendar.ts
@@ -10,6 +10,7 @@ import type { CountableTimeInterval } from "d3";
 import { timeHour } from "d3";
 import {
     interpolateBlues,
+    interpolateMagma,
     pointer,
     scaleLinear,
     scaleSequentialSqrt,
@@ -136,10 +137,21 @@ export function renderCalendar(
         }
     }
     const data = Array.from(dayMap.values());
-    const cappedRange = scaleLinear().range([0.2, nightMode ? 0.8 : 1]);
-    const blues = scaleSequentialSqrt()
-        .domain([0, maxCount])
-        .interpolator((n) => interpolateBlues(cappedRange(n)!));
+    const cappedRange = scaleLinear().range([1, 0]);
+
+    const isColorBlindMode = (window as any).colorBlindMode;
+
+    let gradient;
+
+    if (isColorBlindMode) {
+        gradient = scaleSequentialSqrt()
+            .domain([0, maxCount])
+            .interpolator((n) => interpolateMagma(cappedRange(n)!));
+    } else {
+        gradient = scaleSequentialSqrt()
+            .domain([0, maxCount])
+            .interpolator((n) => interpolateBlues(cappedRange(n)!));
+    }
 
     function tooltipText(d: DayDatum): string {
         const date = localizedDate(d.date, {
@@ -203,7 +215,7 @@ export function renderCalendar(
         })
         .transition()
         .duration(800)
-        .attr("fill", (d: DayDatum) => (d.count === 0 ? emptyColour : blues(d.count)!));
+        .attr("fill", (d: DayDatum) => (d.count === 0 ? emptyColour : gradient(d.count)!));
 }
 
 function timeFunctionForDay(firstDayOfWeek: Weekday): CountableTimeInterval {
diff --git a/ts/routes/graphs/card-counts.ts b/ts/routes/graphs/card-counts.ts
index e31c0a5b9..157ab3356 100644
--- a/ts/routes/graphs/card-counts.ts
+++ b/ts/routes/graphs/card-counts.ts
@@ -22,7 +22,7 @@ import {
     sum,
 } from "d3";
 
-import type { GraphBounds } from "./graph-helpers";
+import { colorBlindColors, type GraphBounds } from "./graph-helpers";
 
 type Count = [string, number, boolean, string];
 export interface GraphData {
@@ -31,15 +31,29 @@ export interface GraphData {
     totalCards: string;
 }
 
-const barColours = [
-    schemeBlues[5][2], /* new */
-    schemeOranges[5][2], /* learn */
-    schemeReds[5][2], /* relearn */
-    schemeGreens[5][2], /* young */
-    schemeGreens[5][3], /* mature */
-    "#FFDC41", /* suspended */
-    "grey", /* buried */
-];
+let barColours;
+
+if ((window as any).colorBlindMode) {
+    barColours = [
+        colorBlindColors.new, /* new */
+        colorBlindColors.learn, /* learn */
+        colorBlindColors.relearn, /* relearn */
+        colorBlindColors.young, /* young */
+        colorBlindColors.mature, /* mature */
+        colorBlindColors.suspended, /* suspended */
+        colorBlindColors.buried, /* buried */
+    ];
+} else {
+    barColours = [
+        schemeBlues[5][2], /* new */
+        schemeOranges[5][2], /* learn */
+        schemeReds[5][2], /* relearn */
+        schemeGreens[5][2], /* young */
+        schemeGreens[5][3], /* mature */
+        "#FFDC41", /* suspended */
+        "#grey", /* buried */
+    ];
+}
 
 function countCards(data: GraphsResponse, separateInactive: boolean): Count[] {
     const countData = separateInactive ? data.cardCounts!.excludingInactive! : data.cardCounts!.includingInactive!;
diff --git a/ts/routes/graphs/ease.ts b/ts/routes/graphs/ease.ts
index 26de02096..446c780ea 100644
--- a/ts/routes/graphs/ease.ts
+++ b/ts/routes/graphs/ease.ts
@@ -9,7 +9,7 @@ import type { GraphsResponse } from "@generated/anki/stats_pb";
 import * as tr from "@generated/ftl";
 import { localizedNumber } from "@tslib/i18n";
 import type { Bin, ScaleLinear } from "d3";
-import { bin, extent, interpolateRdYlGn, scaleLinear, scaleSequential, sum } from "d3";
+import { bin, extent, interpolateRdYlGn, interpolateViridis, scaleLinear, scaleSequential, sum } from "d3";
 
 import type { SearchDispatch, TableDatum } from "./graph-helpers";
 import { getNumericMapBinValue, numericMap } from "./graph-helpers";
@@ -84,7 +84,13 @@ export function prepareData(
         .thresholds(ticks)(allEases.entries() as any);
     const total = sum(bins as any, getNumericMapBinValue);
 
-    const colourScale = scaleSequential(interpolateRdYlGn).domain([xMin, 300]);
+    let colourScale;
+
+    if ((window as any).colorBlindMode) {
+        colourScale = scaleSequential(interpolateViridis).domain([xMin, 300]);
+    } else {
+        colourScale = scaleSequential(interpolateRdYlGn).domain([xMin, 300]);
+    }
 
     function hoverText(bin: Bin<number, number>, _percent: number): string {
         const minPct = Math.floor(bin.x0!);
diff --git a/ts/routes/graphs/future-due.ts b/ts/routes/graphs/future-due.ts
index 6100470b7..2b7b74862 100644
--- a/ts/routes/graphs/future-due.ts
+++ b/ts/routes/graphs/future-due.ts
@@ -10,7 +10,7 @@ import * as tr from "@generated/ftl";
 import { localizedNumber } from "@tslib/i18n";
 import { dayLabel } from "@tslib/time";
 import type { Bin } from "d3";
-import { bin, extent, interpolateGreens, scaleLinear, scaleSequential, sum } from "d3";
+import { bin, extent, interpolateGreens, interpolateViridis, scaleLinear, scaleSequential, sum } from "d3";
 
 import type { SearchDispatch, TableDatum } from "./graph-helpers";
 import { getNumericMapBinValue, GraphRange, numericMap } from "./graph-helpers";
@@ -108,8 +108,20 @@ export function buildHistogram(
     }
 
     const xTickFormat = (n: number): string => localizedNumber(n);
-    const adjustedRange = scaleLinear().range([0.7, 0.3]);
-    const colourScale = scaleSequential((n) => interpolateGreens(adjustedRange(n)!)).domain([xMin!, xMax!]);
+
+    let adjustedRange = scaleLinear().range([0.0, 1]);
+
+    const isColorBlindMode = (window as any).colorBlindMode;
+
+    let colourScale;
+
+    if (isColorBlindMode) {
+        colourScale = scaleSequential((n) => interpolateViridis(adjustedRange(n)!)).domain([xMin!, xMax!]);
+        adjustedRange = scaleLinear().range([0.0, 1]);
+    } else {
+        colourScale = scaleSequential((n) => interpolateGreens(adjustedRange(n)!)).domain([xMin!, xMax!]);
+        adjustedRange = scaleLinear().range([0.7, 0.3]);
+    }
 
     const total = sum(bins as any, getNumericMapBinValue);
 
diff --git a/ts/routes/graphs/graph-helpers.ts b/ts/routes/graphs/graph-helpers.ts
index 47f0249b4..148b2843b 100644
--- a/ts/routes/graphs/graph-helpers.ts
+++ b/ts/routes/graphs/graph-helpers.ts
@@ -105,3 +105,17 @@ export function numericMap<T>(obj: { [k: string]: T }): Map<number, T> {
 export function getNumericMapBinValue(d: Bin<Map<number, number>, number>): number {
     return sum(d, (d) => d[1]);
 }
+
+/**
+ * Colorblind-friendly colors from https://davidmathlogic.com/colorblind/
+ */
+export const colorBlindColors = {
+    new: "#88CCEE",
+    learn: "#44AA99",
+    relearn: "#117733",
+    young: "#CC6677",
+    mature: "#882255",
+    suspended: "#DDCC77",
+    buried: "#332288",
+    filtered: "#AA4499",
+};
diff --git a/ts/routes/graphs/hours.ts b/ts/routes/graphs/hours.ts
index 3f3b07771..9c9e57a27 100644
--- a/ts/routes/graphs/hours.ts
+++ b/ts/routes/graphs/hours.ts
@@ -16,6 +16,7 @@ import {
     axisRight,
     curveBasis,
     interpolateBlues,
+    interpolateViridis,
     pointer,
     scaleBand,
     scaleLinear,
@@ -83,11 +84,23 @@ export function renderHours(
         .classed(oddTickClass, (d: any): boolean => d % 2 != 0)
         .attr("direction", "ltr");
 
-    const cappedRange = scaleLinear().range([0.1, 0.8]);
-    const colour = scaleSequential((n) => interpolateBlues(cappedRange(n)!)).domain([
-        0,
-        yMax,
-    ]);
+    let cappedRange;
+    let colour;
+    const isColorBlindMode = (window as any).colorBlindMode;
+
+    if (isColorBlindMode) {
+        cappedRange = scaleLinear().range([0.0, 1]);
+        colour = scaleSequential((n) => interpolateViridis(cappedRange(n)!)).domain([
+            0,
+            yMax,
+        ]);
+    } else {
+        cappedRange = scaleLinear().range([0.1, 0.8]);
+        colour = scaleSequential((n) => interpolateBlues(cappedRange(n)!)).domain([
+            0,
+            yMax,
+        ]);
+    }
 
     // y scale
     const yTickFormat = (n: number): string => localizedNumber(n);
diff --git a/ts/routes/graphs/intervals.ts b/ts/routes/graphs/intervals.ts
index ffd41b238..ad5121163 100644
--- a/ts/routes/graphs/intervals.ts
+++ b/ts/routes/graphs/intervals.ts
@@ -10,7 +10,7 @@ import * as tr from "@generated/ftl";
 import { localizedNumber } from "@tslib/i18n";
 import { timeSpan } from "@tslib/time";
 import type { Bin } from "d3";
-import { bin, extent, interpolateBlues, quantile, scaleLinear, scaleSequential, sum } from "d3";
+import { bin, extent, interpolateBlues, interpolateViridis, quantile, scaleLinear, scaleSequential, sum } from "d3";
 
 import type { SearchDispatch, TableDatum } from "./graph-helpers";
 import { numericMap } from "./graph-helpers";
@@ -147,8 +147,16 @@ export function prepareIntervalData(
         return [null, []];
     }
 
-    const adjustedRange = scaleLinear().range([0.7, 0.3]);
-    const colourScale = scaleSequential((n) => interpolateBlues(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    let adjustedRange;
+    let colourScale;
+
+    if ((window as any).colorBlindMode) {
+        adjustedRange = scaleLinear().range([0.3, 0.7]);
+        colourScale = scaleSequential((n) => interpolateViridis(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    } else {
+        adjustedRange = scaleLinear().range([0.7, 0.3]);
+        colourScale = scaleSequential((n) => interpolateBlues(adjustedRange(n)!)).domain([xMax!, xMin!]);
+    }
 
     function hoverText(
         bin: Bin<number, number>,
diff --git a/ts/routes/graphs/reviews.ts b/ts/routes/graphs/reviews.ts
index ed0e07f8c..1d274d56d 100644
--- a/ts/routes/graphs/reviews.ts
+++ b/ts/routes/graphs/reviews.ts
@@ -16,12 +16,15 @@ import {
     axisLeft,
     axisRight,
     bin,
+    color,
     cumsum,
     curveBasis,
+    hsl,
     interpolateGreens,
     interpolateOranges,
     interpolatePurples,
     interpolateReds,
+    interpolateRgb,
     max,
     min,
     pointer,
@@ -31,7 +34,7 @@ import {
     sum,
 } from "d3";
 
-import type { GraphBounds, TableDatum } from "./graph-helpers";
+import { colorBlindColors, type GraphBounds, type TableDatum } from "./graph-helpers";
 import { GraphRange, numericMap, setDataAvailable } from "./graph-helpers";
 import { hideTooltip, showTooltip } from "./tooltip-utils.svelte";
 
@@ -188,18 +191,47 @@ export function renderReviews(
         x.domain() as any,
     );
 
+    const colorBlindMode = (window as any).colorBlindMode;
+
+    function makeColorBlindGradient(baseHex: string, satAdjust = 0.02, lightAdjust = 0.02) {
+        const base = color(baseHex);
+        if (!base) { throw new Error(`Invalid color: ${baseHex}`); }
+
+        const lighter = hsl(base);
+        lighter.s = Math.min(1, lighter.s + satAdjust);
+        lighter.l = Math.min(1, lighter.l + lightAdjust);
+
+        const darker = hsl(base);
+        darker.s = Math.max(0, darker.s - satAdjust);
+        darker.l = Math.max(0, darker.l - lightAdjust);
+
+        return scaleSequential(interpolateRgb(darker.toString(), lighter.toString()));
+    }
+
+    const colorBlindScales = {
+        mature: makeColorBlindGradient(colorBlindColors.mature),
+        learn: makeColorBlindGradient(colorBlindColors.learn),
+        relearn: makeColorBlindGradient(colorBlindColors.relearn),
+        young: makeColorBlindGradient(colorBlindColors.young),
+        suspended: makeColorBlindGradient(colorBlindColors.suspended),
+        buried: makeColorBlindGradient(colorBlindColors.buried),
+        filtered: makeColorBlindGradient(colorBlindColors.filtered),
+    };
+
+    Object.values(colorBlindScales).forEach(scale => scale.domain(x.domain() as any));
+
     function binColor(idx: BinIndex): ScaleSequential<string> {
         switch (idx) {
             case BinIndex.Mature:
-                return darkerGreens;
+                return colorBlindMode ? colorBlindScales.mature : darkerGreens;
             case BinIndex.Young:
-                return lighterGreens;
+                return colorBlindMode ? colorBlindScales.young : lighterGreens;
             case BinIndex.Learn:
-                return oranges;
+                return colorBlindMode ? colorBlindScales.learn : oranges;
             case BinIndex.Relearn:
-                return reds;
+                return colorBlindMode ? colorBlindScales.relearn : reds;
             case BinIndex.Filtered:
-                return purples;
+                return colorBlindMode ? colorBlindScales.filtered : purples;
         }
     }