diff --git a/CHANGELOG.md b/CHANGELOG.md
index 91014933c0..d467254ccc 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -33,6 +33,7 @@
 - Usage bars: render values rounded to 0% or 100% as fully empty or full. Thanks @Zihao-Qi!
 - Codex web: keep cookie-import deadlines responsive when browser cookie work blocks the shared worker pool.
 - z.ai: open the usage dashboard for the configured global or China API region. Thanks @renbaoshuo!
+- Usage dashboards: tint inline history bars with each provider's branding color. Thanks @elijahfriedman!
 - Codex pace: extrapolate historically exhausted weeks for run-out forecasts and avoid contradictory reset headlines. Thanks @Yuxin-Qiao!
 - Localization: correct the German in-progress refresh label. Thanks @ChrisLauinger77!
 - Localization: correct misleading literal German UI translations. Thanks @madebyjulz!
diff --git a/Sources/CodexBar/InlineUsageDashboardContent.swift b/Sources/CodexBar/InlineUsageDashboardContent.swift
index cc3f5ff557..762007bdc0 100644
--- a/Sources/CodexBar/InlineUsageDashboardContent.swift
+++ b/Sources/CodexBar/InlineUsageDashboardContent.swift
@@ -27,6 +27,9 @@ struct InlineUsageDashboardModel: Equatable {
     let kpis: [KPI]
     let points: [Point]
     let detailLines: [String]
+    /// Provider branding color used to fill the mini usage bars. When nil the bars fall back to a
+    /// neutral palette derived from `valueStyle`.
+    var barColor: Color?
 }
 
 extension UsageMenuCardView.Model {
@@ -141,6 +144,19 @@ extension UsageMenuCardView.Model {
     }
 
     static func inlineUsageDashboard(input: Input) -> InlineUsageDashboardModel? {
+        guard var model = self.resolveInlineUsageDashboard(input: input) else { return nil }
+        model.barColor = Self.inlineDashboardBarColor(for: input.provider)
+        return model
+    }
+
+    /// Provider branding color for the inline usage bars, matching the provider's switcher tab and
+    /// detailed cost-history chart.
+    static func inlineDashboardBarColor(for provider: UsageProvider) -> Color {
+        let color = ProviderDescriptorRegistry.descriptor(for: provider).branding.color
+        return Color(red: color.red, green: color.green, blue: color.blue)
+    }
+
+    private static func resolveInlineUsageDashboard(input: Input) -> InlineUsageDashboardModel? {
         if self.usesProviderCostHistoryAsPrimaryDashboard(input.provider),
            let tokenSnapshot = primaryCostHistorySnapshot(input: input),
            !tokenSnapshot.daily.isEmpty
@@ -757,13 +773,20 @@ struct InlineUsageDashboardContent: View {
             if self.isHighlighted {
                 return Color.white.opacity(0.55 + ratio * 0.35)
             }
+            return self.baseColor.opacity(0.42 + ratio * 0.58)
+        }
+
+        private var baseColor: Color {
+            if let barColor = self.model.barColor {
+                return barColor
+            }
             switch self.model.valueStyle {
             case .currencyUSD, .currency:
-                return Color(red: 0.81, green: 0.56, blue: 0.24).opacity(0.42 + ratio * 0.58)
+                return Color(red: 0.81, green: 0.56, blue: 0.24)
             case .tokens:
-                return Color(red: 0.48, green: 0.41, blue: 0.86).opacity(0.42 + ratio * 0.58)
+                return Color(red: 0.48, green: 0.41, blue: 0.86)
             case .points:
-                return Color(red: 0.16, green: 0.62, blue: 0.36).opacity(0.42 + ratio * 0.58)
+                return Color(red: 0.16, green: 0.62, blue: 0.36)
             }
         }
     }
diff --git a/Tests/CodexBarTests/InlineUsageDashboardBarColorTests.swift b/Tests/CodexBarTests/InlineUsageDashboardBarColorTests.swift
new file mode 100644
index 0000000000..78b34b2c14
--- /dev/null
+++ b/Tests/CodexBarTests/InlineUsageDashboardBarColorTests.swift
@@ -0,0 +1,88 @@
+import CodexBarCore
+import Foundation
+import SwiftUI
+import Testing
+@testable import CodexBar
+
+struct InlineUsageDashboardBarColorTests {
+    /// The inline usage bars must be tinted with each provider's branding color (the same color
+    /// used by the switcher tab and the detailed cost-history chart) rather than a fixed palette.
+    @Test
+    func `bar color matches branding for every provider`() {
+        for provider in UsageProvider.allCases {
+            let branding = ProviderDescriptorRegistry.descriptor(for: provider).branding.color
+            let expected = Color(red: branding.red, green: branding.green, blue: branding.blue)
+            #expect(
+                UsageMenuCardView.Model.inlineDashboardBarColor(for: provider) == expected,
+                "inline bar color did not match branding for \(provider.rawValue)")
+        }
+    }
+
+    /// The resolved dashboard model must actually carry the provider's branding color, and two
+    /// providers with different branding must end up with different bar colors.
+    @Test
+    func `resolved dashboard carries provider branding color`() throws {
+        let now = Date(timeIntervalSince1970: 1_700_179_200)
+        let daily = [
+            CostUsageDailyReport.Entry(
+                date: "2023-11-14",
+                inputTokens: 100,
+                outputTokens: 50,
+                totalTokens: 150,
+                costUSD: 0.12,
+                modelsUsed: ["gpt-5"],
+                modelBreakdowns: nil),
+            CostUsageDailyReport.Entry(
+                date: "2023-11-15",
+                inputTokens: 200,
+                outputTokens: 75,
+                totalTokens: 275,
+                costUSD: 0.25,
+                modelsUsed: ["gpt-5"],
+                modelBreakdowns: nil),
+        ]
+
+        func makeModel(provider: UsageProvider) throws -> UsageMenuCardView.Model {
+            let metadata = try #require(ProviderDefaults.metadata[provider])
+            let tokenSnapshot = CostUsageTokenSnapshot(
+                sessionTokens: 275,
+                sessionCostUSD: 0.25,
+                last30DaysTokens: 425,
+                last30DaysCostUSD: 0.37,
+                historyDays: 30,
+                daily: daily,
+                updatedAt: now)
+            return UsageMenuCardView.Model.make(.init(
+                provider: provider,
+                metadata: metadata,
+                snapshot: UsageSnapshot(
+                    primary: RateWindow(usedPercent: 10, windowMinutes: nil, resetsAt: nil, resetDescription: nil),
+                    secondary: nil,
+                    updatedAt: now),
+                credits: nil,
+                creditsError: nil,
+                dashboard: nil,
+                dashboardError: nil,
+                tokenSnapshot: tokenSnapshot,
+                tokenError: nil,
+                account: AccountInfo(email: nil, plan: nil),
+                isRefreshing: false,
+                lastError: nil,
+                usageBarsShowUsed: false,
+                resetTimeDisplayStyle: .countdown,
+                tokenCostUsageEnabled: true,
+                showOptionalCreditsAndExtraUsage: true,
+                hidePersonalInfo: false,
+                now: now))
+        }
+
+        let codex = try makeModel(provider: .codex)
+        let claude = try makeModel(provider: .claude)
+
+        #expect(codex.inlineUsageDashboard?.barColor
+            == UsageMenuCardView.Model.inlineDashboardBarColor(for: .codex))
+        #expect(claude.inlineUsageDashboard?.barColor
+            == UsageMenuCardView.Model.inlineDashboardBarColor(for: .claude))
+        #expect(codex.inlineUsageDashboard?.barColor != claude.inlineUsageDashboard?.barColor)
+    }
+}