diff --git a/packages/features/embed/Embed.tsx b/packages/features/embed/Embed.tsx
index 4b230ca024..f136c9e1af 100644
--- a/packages/features/embed/Embed.tsx
+++ b/packages/features/embed/Embed.tsx
@@ -17,7 +17,7 @@ import { useTimePreferences } from "@calcom/features/bookings/lib/timePreference
 import DatePicker from "@calcom/features/calendars/DatePicker";
 import { useNonEmptyScheduleDays } from "@calcom/features/schedules";
 import { useSlotsForDate } from "@calcom/features/schedules/lib/use-schedule/useSlotsForDate";
-import { APP_NAME } from "@calcom/lib/constants";
+import { APP_NAME, DEFAULT_LIGHT_BRAND_COLOR, DEFAULT_DARK_BRAND_COLOR } from "@calcom/lib/constants";
 import { weekdayToWeekIndex } from "@calcom/lib/date-fns";
 import { useCompatSearchParams } from "@calcom/lib/hooks/useCompatSearchParams";
 import { useLocale } from "@calcom/lib/hooks/useLocale";
@@ -41,10 +41,17 @@ import {
   TimezoneSelect,
 } from "@calcom/ui";
 
+import { buildCssVarsPerTheme } from "./lib/buildCssVarsPerTheme";
 import { getDimension } from "./lib/getDimension";
 import type { EmbedTabs, EmbedType, EmbedTypes, PreviewState } from "./types";
 
 type EventType = RouterOutputs["viewer"]["eventTypes"]["get"]["eventType"] | undefined;
+type EmbedDialogProps = {
+  types: EmbedTypes;
+  tabs: EmbedTabs;
+  eventTypeHideOptionDisabled: boolean;
+  defaultBrandColor: { brandColor: string | null; darkBrandColor: string | null } | null;
+};
 
 const enum Theme {
   auto = "auto",
@@ -525,13 +532,12 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
   namespace,
   eventTypeHideOptionDisabled,
   types,
-}: {
+  defaultBrandColor,
+}: EmbedDialogProps & {
   embedType: EmbedType;
   embedUrl: string;
-  tabs: EmbedTabs;
   namespace: string;
   eventTypeHideOptionDisabled: boolean;
-  types: EmbedTypes;
 }) => {
   const { t } = useLocale();
   const searchParams = useCompatSearchParams();
@@ -578,6 +584,19 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
   const defaultConfig = {
     layout: BookerLayouts.MONTH_VIEW,
   };
+
+  const paletteDefaultValue = (paletteName: string) => {
+    if (paletteName === "brandColor") {
+      return defaultBrandColor?.brandColor ?? DEFAULT_LIGHT_BRAND_COLOR;
+    }
+
+    if (paletteName === "darkBrandColor") {
+      return defaultBrandColor?.darkBrandColor ?? DEFAULT_DARK_BRAND_COLOR;
+    }
+
+    return "#000000";
+  };
+
   const [previewState, setPreviewState] = useState<PreviewState>({
     inline: {
       width: "100%",
@@ -594,7 +613,8 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
     } as PreviewState["elementClick"],
     hideEventTypeDetails: false,
     palette: {
-      brandColor: "#000000",
+      brandColor: defaultBrandColor?.brandColor ?? null,
+      darkBrandColor: defaultBrandColor?.darkBrandColor ?? null,
     },
   });
 
@@ -614,7 +634,7 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
     return null;
   }
 
-  const addToPalette = (update: (typeof previewState)["palette"]) => {
+  const addToPalette = (update: Partial<(typeof previewState)["palette"]>) => {
     setPreviewState((previewState) => {
       return {
         ...previewState,
@@ -657,11 +677,10 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
       theme: previewState.theme,
       layout: previewState.layout,
       hideEventTypeDetails: previewState.hideEventTypeDetails,
-      styles: {
-        branding: {
-          ...previewState.palette,
-        },
-      },
+      cssVarsPerTheme: buildCssVarsPerTheme({
+        brandColor: previewState.palette.brandColor,
+        darkBrandColor: previewState.palette.darkBrandColor,
+      }),
     },
   });
 
@@ -994,7 +1013,8 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
                         </div>
                       ) : null}
                       {[
-                        { name: "brandColor", title: "Brand Color" },
+                        { name: "brandColor", title: "light_brand_color" },
+                        { name: "darkBrandColor", title: "dark_brand_color" },
                         // { name: "lightColor", title: "Light Color" },
                         // { name: "lighterColor", title: "Lighter Color" },
                         // { name: "lightestColor", title: "Lightest Color" },
@@ -1002,12 +1022,12 @@ const EmbedTypeCodeAndPreviewDialogContent = ({
                         // { name: "medianColor", title: "Median Color" },
                       ].map((palette) => (
                         <Label key={palette.name} className="mb-6">
-                          <div className="mb-2">{palette.title}</div>
+                          <div className="mb-2">{t(palette.title)}</div>
                           <div className="w-full">
                             <ColorPicker
                               popoverAlign="start"
                               container={dialogContentRef?.current ?? undefined}
-                              defaultValue="#000000"
+                              defaultValue={paletteDefaultValue(palette.name)}
                               onChange={(color) => {
                                 addToPalette({
                                   [palette.name as keyof (typeof previewState)["palette"]]: color,
@@ -1164,11 +1184,8 @@ export const EmbedDialog = ({
   types,
   tabs,
   eventTypeHideOptionDisabled,
-}: {
-  types: EmbedTypes;
-  tabs: EmbedTabs;
-  eventTypeHideOptionDisabled: boolean;
-}) => {
+  defaultBrandColor,
+}: EmbedDialogProps) => {
   const searchParams = useCompatSearchParams();
   const embedUrl = (searchParams?.get("embedUrl") || "") as string;
   const namespace = (searchParams?.get("namespace") || "") as string;
@@ -1184,6 +1201,7 @@ export const EmbedDialog = ({
           tabs={tabs}
           types={types}
           eventTypeHideOptionDisabled={eventTypeHideOptionDisabled}
+          defaultBrandColor={defaultBrandColor}
         />
       )}
     </Dialog>
diff --git a/packages/features/embed/EventTypeEmbed.tsx b/packages/features/embed/EventTypeEmbed.tsx
index 5cb78e78f0..c74408388e 100644
--- a/packages/features/embed/EventTypeEmbed.tsx
+++ b/packages/features/embed/EventTypeEmbed.tsx
@@ -1,13 +1,23 @@
 import type { ComponentProps } from "react";
 
+import { trpc } from "@calcom/trpc/react";
+
 import { EmbedButton, EmbedDialog } from "./Embed";
 import { tabs } from "./lib/EmbedTabs";
 import { useEmbedTypes } from "./lib/hooks";
 
 export const EventTypeEmbedDialog = () => {
   const types = useEmbedTypes();
+  const { data: user } = trpc.viewer.me.useQuery();
 
-  return <EmbedDialog types={types} tabs={tabs} eventTypeHideOptionDisabled={false} />;
+  return (
+    <EmbedDialog
+      types={types}
+      tabs={tabs}
+      eventTypeHideOptionDisabled={false}
+      defaultBrandColor={user ? { brandColor: user.brandColor, darkBrandColor: user.darkBrandColor } : null}
+    />
+  );
 };
 
 export const EventTypeEmbedButton = (props: ComponentProps<typeof EmbedButton>) => {
diff --git a/packages/features/embed/RoutingFormEmbed.tsx b/packages/features/embed/RoutingFormEmbed.tsx
index 3002eb6eae..76e29ad250 100644
--- a/packages/features/embed/RoutingFormEmbed.tsx
+++ b/packages/features/embed/RoutingFormEmbed.tsx
@@ -1,14 +1,23 @@
 import type { ComponentProps } from "react";
 
 import { EmbedDialog, EmbedButton } from "@calcom/features/embed/Embed";
+import { trpc } from "@calcom/trpc/react";
 
 import { tabs } from "./lib/EmbedTabs";
 import { useEmbedTypes } from "./lib/hooks";
 
 export const RoutingFormEmbedDialog = () => {
   const types = useEmbedTypes();
+  const { data: user } = trpc.viewer.me.useQuery();
   const routingFormTypes = types.filter((type) => type.type !== "email");
-  return <EmbedDialog types={routingFormTypes} tabs={tabs} eventTypeHideOptionDisabled={true} />;
+  return (
+    <EmbedDialog
+      types={routingFormTypes}
+      tabs={tabs}
+      eventTypeHideOptionDisabled={true}
+      defaultBrandColor={user ? { brandColor: user.brandColor, darkBrandColor: user.darkBrandColor } : null}
+    />
+  );
 };
 
 export const RoutingFormEmbedButton = (props: ComponentProps<typeof EmbedButton>) => {
diff --git a/packages/features/embed/lib/EmbedTabs.tsx b/packages/features/embed/lib/EmbedTabs.tsx
index 9ccc9caf08..536cdf6146 100644
--- a/packages/features/embed/lib/EmbedTabs.tsx
+++ b/packages/features/embed/lib/EmbedTabs.tsx
@@ -9,6 +9,7 @@ import { TextArea } from "@calcom/ui";
 
 import type { EmbedFramework, EmbedType, PreviewState } from "../types";
 import { Codes } from "./EmbedCodes";
+import { buildCssVarsPerTheme } from "./buildCssVarsPerTheme";
 import { embedLibUrl, EMBED_PREVIEW_HTML_URL } from "./constants";
 import { getApiNameForReactSnippet, getApiNameForVanillaJsSnippet } from "./getApiName";
 import { getDimension } from "./getDimension";
@@ -175,25 +176,27 @@ const getEmbedTypeSpecificString = ({
   let uiInstructionStringArg: {
     apiName: string;
     theme: PreviewState["theme"];
-    brandColor: string;
+    brandColor: string | null;
+    darkBrandColor: string | null;
     hideEventTypeDetails: boolean;
     layout?: BookerLayout;
   };
+  const baseUiInstructionStringArg = {
+    theme: previewState.theme,
+    brandColor: previewState.palette.brandColor,
+    darkBrandColor: previewState.palette.darkBrandColor,
+    hideEventTypeDetails: previewState.hideEventTypeDetails,
+    layout: previewState.layout,
+  };
   if (embedFramework === "react") {
     uiInstructionStringArg = {
+      ...baseUiInstructionStringArg,
       apiName: getApiNameForReactSnippet({ mainApiName: "cal" }),
-      theme: previewState.theme,
-      brandColor: previewState.palette.brandColor,
-      hideEventTypeDetails: previewState.hideEventTypeDetails,
-      layout: previewState.layout,
     };
   } else {
     uiInstructionStringArg = {
+      ...baseUiInstructionStringArg,
       apiName: getApiNameForVanillaJsSnippet({ namespace, mainApiName: "Cal" }),
-      theme: previewState.theme,
-      brandColor: previewState.palette.brandColor,
-      hideEventTypeDetails: previewState.hideEventTypeDetails,
-      layout: previewState.layout,
     };
   }
   if (!frameworkCodes[embedType]) {
@@ -230,27 +233,26 @@ const getEmbedUIInstructionString = ({
   apiName,
   theme,
   brandColor,
+  darkBrandColor,
   hideEventTypeDetails,
   layout,
 }: {
   apiName: string;
   theme?: string;
-  brandColor: string;
+  brandColor: string | null;
+  darkBrandColor: string | null;
   hideEventTypeDetails: boolean;
   layout?: string;
 }) => {
   theme = theme !== "auto" ? theme : undefined;
+
   return getInstructionString({
     apiName,
     instructionName: "ui",
     instructionArg: {
       theme,
-      styles: {
-        branding: {
-          brandColor,
-        },
-      },
-      hideEventTypeDetails: hideEventTypeDetails,
+      cssVarsPerTheme: buildCssVarsPerTheme({ brandColor, darkBrandColor }),
+      hideEventTypeDetails,
       layout,
     },
   });
diff --git a/packages/features/embed/lib/buildCssVarsPerTheme.ts b/packages/features/embed/lib/buildCssVarsPerTheme.ts
new file mode 100644
index 0000000000..076ab60222
--- /dev/null
+++ b/packages/features/embed/lib/buildCssVarsPerTheme.ts
@@ -0,0 +1,39 @@
+function _buildCssVarsPerTheme({
+  light,
+  dark,
+}: {
+  light: { "cal-brand": string | null };
+  dark: { "cal-brand": string | null };
+}) {
+  // Setting this value should remove it from the API
+  const VALUE_WHEN_WE_DONT_WANT_IT_IN_API = undefined;
+  const cssVarsPerTheme = Object.entries({ light, dark }).reduce((acc, [theme, themeCssVars]) => {
+    if (!Object.values(themeCssVars).some(Boolean)) return acc;
+
+    const truthyValues = Object.fromEntries(
+      Object.entries(themeCssVars).filter(([_, value]) => Boolean(value))
+    );
+
+    return {
+      ...acc,
+      [theme]: truthyValues,
+    };
+  }, {});
+
+  if (Object.keys(cssVarsPerTheme).length === 0) return VALUE_WHEN_WE_DONT_WANT_IT_IN_API;
+
+  return cssVarsPerTheme;
+}
+
+export function buildCssVarsPerTheme({
+  brandColor,
+  darkBrandColor,
+}: {
+  brandColor: string | null;
+  darkBrandColor: string | null;
+}) {
+  return _buildCssVarsPerTheme({
+    light: { "cal-brand": brandColor },
+    dark: { "cal-brand": darkBrandColor },
+  });
+}
diff --git a/packages/features/embed/types/index.d.ts b/packages/features/embed/types/index.d.ts
index 3c6c73f9c2..b106608001 100644
--- a/packages/features/embed/types/index.d.ts
+++ b/packages/features/embed/types/index.d.ts
@@ -36,7 +36,8 @@ export type PreviewState = {
     "element-click"
   >;
   palette: {
-    brandColor: string;
+    brandColor: string | null;
+    darkBrandColor: string | null;
   };
   hideEventTypeDetails: boolean;
   layout: BookerLayouts;