diff --git a/src/uix/eidos/active-eidos-config.test.ts b/src/uix/eidos/active-eidos-config.test.ts
index fb421069a..035bf9766 100644
--- a/src/uix/eidos/active-eidos-config.test.ts
+++ b/src/uix/eidos/active-eidos-config.test.ts
@@ -972,7 +972,7 @@ describe('ActiveEidos config', () => {
 		expect(css).toContain('--scale-purple-a9: rgb(92 0 173 / 0.6941);')
 		expect(css).toContain('--primitive-primary-9: var(--scale-purple-9);')
 		expect(css).toContain('--primitive-primary-a9: var(--scale-purple-a9);')
-		expect(css).toContain('--primitive-tertiary-9: var(--scale-gray-9);')
+		expect(css).toContain('--primitive-tertiary-9: var(--scale-indigo-9);')
 		expect(css).toContain('--color-primary-solid: var(--primitive-primary-9);')
 		expect(css).toContain('--color-primary-solid-hover: var(--primitive-primary-10);')
 		expect(css).toContain('--color-surface-default: var(--primitive-neutral-1);')
diff --git a/src/uix/eidos/generated/base.css b/src/uix/eidos/generated/base.css
index 7146777f8..9e80c9eb0 100644
--- a/src/uix/eidos/generated/base.css
+++ b/src/uix/eidos/generated/base.css
@@ -5736,30 +5736,30 @@
 	--color-secondary-contrast: var(--color-content-on-solid, var(--primitive-secondary-12));
 	--color-secondary-surface: var(--primitive-secondary-a2);
 	--color-secondary-surface-hover: var(--primitive-secondary-a3);
-	--primitive-tertiary-1: var(--scale-gray-1);
-	--primitive-tertiary-2: var(--scale-gray-2);
-	--primitive-tertiary-3: var(--scale-gray-3);
-	--primitive-tertiary-4: var(--scale-gray-4);
-	--primitive-tertiary-5: var(--scale-gray-5);
-	--primitive-tertiary-6: var(--scale-gray-6);
-	--primitive-tertiary-7: var(--scale-gray-7);
-	--primitive-tertiary-8: var(--scale-gray-8);
-	--primitive-tertiary-9: var(--scale-gray-9);
-	--primitive-tertiary-10: var(--scale-gray-10);
-	--primitive-tertiary-11: var(--scale-gray-11);
-	--primitive-tertiary-12: var(--scale-gray-12);
-	--primitive-tertiary-a1: var(--scale-gray-a1);
-	--primitive-tertiary-a2: var(--scale-gray-a2);
-	--primitive-tertiary-a3: var(--scale-gray-a3);
-	--primitive-tertiary-a4: var(--scale-gray-a4);
-	--primitive-tertiary-a5: var(--scale-gray-a5);
-	--primitive-tertiary-a6: var(--scale-gray-a6);
-	--primitive-tertiary-a7: var(--scale-gray-a7);
-	--primitive-tertiary-a8: var(--scale-gray-a8);
-	--primitive-tertiary-a9: var(--scale-gray-a9);
-	--primitive-tertiary-a10: var(--scale-gray-a10);
-	--primitive-tertiary-a11: var(--scale-gray-a11);
-	--primitive-tertiary-a12: var(--scale-gray-a12);
+	--primitive-tertiary-1: var(--scale-indigo-1);
+	--primitive-tertiary-2: var(--scale-indigo-2);
+	--primitive-tertiary-3: var(--scale-indigo-3);
+	--primitive-tertiary-4: var(--scale-indigo-4);
+	--primitive-tertiary-5: var(--scale-indigo-5);
+	--primitive-tertiary-6: var(--scale-indigo-6);
+	--primitive-tertiary-7: var(--scale-indigo-7);
+	--primitive-tertiary-8: var(--scale-indigo-8);
+	--primitive-tertiary-9: var(--scale-indigo-9);
+	--primitive-tertiary-10: var(--scale-indigo-10);
+	--primitive-tertiary-11: var(--scale-indigo-11);
+	--primitive-tertiary-12: var(--scale-indigo-12);
+	--primitive-tertiary-a1: var(--scale-indigo-a1);
+	--primitive-tertiary-a2: var(--scale-indigo-a2);
+	--primitive-tertiary-a3: var(--scale-indigo-a3);
+	--primitive-tertiary-a4: var(--scale-indigo-a4);
+	--primitive-tertiary-a5: var(--scale-indigo-a5);
+	--primitive-tertiary-a6: var(--scale-indigo-a6);
+	--primitive-tertiary-a7: var(--scale-indigo-a7);
+	--primitive-tertiary-a8: var(--scale-indigo-a8);
+	--primitive-tertiary-a9: var(--scale-indigo-a9);
+	--primitive-tertiary-a10: var(--scale-indigo-a10);
+	--primitive-tertiary-a11: var(--scale-indigo-a11);
+	--primitive-tertiary-a12: var(--scale-indigo-a12);
 	--color-tertiary-track: var(--primitive-tertiary-1);
 	--color-tertiary-element: var(--primitive-tertiary-3);
 	--color-tertiary-hover: var(--primitive-tertiary-4);
@@ -6825,30 +6825,30 @@
 	--color-secondary-contrast: var(--color-content-on-solid, var(--primitive-secondary-12));
 	--color-secondary-surface: var(--primitive-secondary-a2);
 	--color-secondary-surface-hover: var(--primitive-secondary-a3);
-	--primitive-tertiary-1: var(--scale-gray-1);
-	--primitive-tertiary-2: var(--scale-gray-2);
-	--primitive-tertiary-3: var(--scale-gray-3);
-	--primitive-tertiary-4: var(--scale-gray-4);
-	--primitive-tertiary-5: var(--scale-gray-5);
-	--primitive-tertiary-6: var(--scale-gray-6);
-	--primitive-tertiary-7: var(--scale-gray-7);
-	--primitive-tertiary-8: var(--scale-gray-8);
-	--primitive-tertiary-9: var(--scale-gray-9);
-	--primitive-tertiary-10: var(--scale-gray-10);
-	--primitive-tertiary-11: var(--scale-gray-11);
-	--primitive-tertiary-12: var(--scale-gray-12);
-	--primitive-tertiary-a1: var(--scale-gray-a1);
-	--primitive-tertiary-a2: var(--scale-gray-a2);
-	--primitive-tertiary-a3: var(--scale-gray-a3);
-	--primitive-tertiary-a4: var(--scale-gray-a4);
-	--primitive-tertiary-a5: var(--scale-gray-a5);
-	--primitive-tertiary-a6: var(--scale-gray-a6);
-	--primitive-tertiary-a7: var(--scale-gray-a7);
-	--primitive-tertiary-a8: var(--scale-gray-a8);
-	--primitive-tertiary-a9: var(--scale-gray-a9);
-	--primitive-tertiary-a10: var(--scale-gray-a10);
-	--primitive-tertiary-a11: var(--scale-gray-a11);
-	--primitive-tertiary-a12: var(--scale-gray-a12);
+	--primitive-tertiary-1: var(--scale-indigo-1);
+	--primitive-tertiary-2: var(--scale-indigo-2);
+	--primitive-tertiary-3: var(--scale-indigo-3);
+	--primitive-tertiary-4: var(--scale-indigo-4);
+	--primitive-tertiary-5: var(--scale-indigo-5);
+	--primitive-tertiary-6: var(--scale-indigo-6);
+	--primitive-tertiary-7: var(--scale-indigo-7);
+	--primitive-tertiary-8: var(--scale-indigo-8);
+	--primitive-tertiary-9: var(--scale-indigo-9);
+	--primitive-tertiary-10: var(--scale-indigo-10);
+	--primitive-tertiary-11: var(--scale-indigo-11);
+	--primitive-tertiary-12: var(--scale-indigo-12);
+	--primitive-tertiary-a1: var(--scale-indigo-a1);
+	--primitive-tertiary-a2: var(--scale-indigo-a2);
+	--primitive-tertiary-a3: var(--scale-indigo-a3);
+	--primitive-tertiary-a4: var(--scale-indigo-a4);
+	--primitive-tertiary-a5: var(--scale-indigo-a5);
+	--primitive-tertiary-a6: var(--scale-indigo-a6);
+	--primitive-tertiary-a7: var(--scale-indigo-a7);
+	--primitive-tertiary-a8: var(--scale-indigo-a8);
+	--primitive-tertiary-a9: var(--scale-indigo-a9);
+	--primitive-tertiary-a10: var(--scale-indigo-a10);
+	--primitive-tertiary-a11: var(--scale-indigo-a11);
+	--primitive-tertiary-a12: var(--scale-indigo-a12);
 	--color-tertiary-track: var(--primitive-tertiary-1);
 	--color-tertiary-element: var(--primitive-tertiary-3);
 	--color-tertiary-hover: var(--primitive-tertiary-4);
diff --git a/src/uix/eidos/lib/themes/base.ts b/src/uix/eidos/lib/themes/base.ts
index 71996243f..69ff05286 100644
--- a/src/uix/eidos/lib/themes/base.ts
+++ b/src/uix/eidos/lib/themes/base.ts
@@ -18,7 +18,11 @@ import { BUILTIN_KEYFRAMES, BUILTIN_SIGNATURES, BUILTIN_CSS_PRESETS } from '../m
 export const THEME_BASE_COLOR_ROLES: ColorRoleMap = {
 	primary: 'purple',
 	secondary: 'slate',
-	tertiary: 'gray',
+	// Tertiary is a SATURATED accent — distinct from the near-gray secondary (slate)
+	// and the gray neutral. Indigo is purple's cool ~60° neighbor (Material 3's
+	// tertiary-hue rule) and sits in a hue band no intent occupies, so it reads as
+	// hierarchy, not a signal. (Was `gray` — collided with neutral.)
+	tertiary: 'indigo',
 	// `gray-9` (el sólido neutral) es un gris medio: ni blanco ni negro
 	// contrastan por defecto. El slot `contrast` se fija al step 12 — casi-negro
 	// en light, casi-blanco en dark — para que el texto sobre el sólido neutral