diff --git a/continue.md b/continue.md
index b8b85b120..0e011a1b4 100644
--- a/continue.md
+++ b/continue.md
@@ -38,10 +38,12 @@ Actualizacion Eidos ecosystem 2026-05-16:
 - Grupos semanticos de color (`surface`, `content`, `border`, `focus`) quedan
   cerrados con key sets canonicos y valores no vacios antes de generar tokens
   de theme.
+- Overrides de `semantics.color.roles.*.slots` quedan validados: solo slots
+  canonicos y pasos `1..12`.
 - Validado:
-  - `npx vitest run src/uix/eidos/active-eidos-config.test.ts` -> 32 tests OK.
+  - `npx vitest run src/uix/eidos/active-eidos-config.test.ts` -> 33 tests OK.
   - `npx vitest run src/uix/eidos/active-eidos.test.ts` -> 19 tests OK.
-  - `npx vitest run src/uix/eidos` -> 7 archivos, 72 tests OK.
+  - `npx vitest run src/uix/eidos` -> 7 archivos, 73 tests OK.
   - `npm run check` -> 0 errores, 0 warnings.
 
 Actualizacion permutation runner 2026-05-16:
diff --git a/src/uix/eidos/active-eidos-config.test.ts b/src/uix/eidos/active-eidos-config.test.ts
index 7d36ca609..fd5e5d07f 100644
--- a/src/uix/eidos/active-eidos-config.test.ts
+++ b/src/uix/eidos/active-eidos-config.test.ts
@@ -581,6 +581,28 @@ describe('ActiveEidos config', () => {
 		)
 	})
 
+	it('validates semantic color role slot overrides', () => {
+		const cfg = structuredClone(THEME_BASE_OPTIONS)
+
+		;(cfg.semantics.color.roles as unknown as Record<string, unknown>).primary = {
+			scale: 'purple',
+			slots: {
+				solid: '13',
+				madeUp: '9'
+			}
+		}
+
+		const report = createEidos(cfg).validate()
+
+		expect(report.ok).toBe(false)
+		expect(
+			report.issues.some((issue) => issue.path === 'semantics.color.roles.primary.slots.solid')
+		).toBe(true)
+		expect(
+			report.issues.some((issue) => issue.path === 'semantics.color.roles.primary.slots.madeUp')
+		).toBe(true)
+	})
+
 	it('validates CSS-facing theme and color scale keys', () => {
 		const cfg = structuredClone(THEME_BASE_OPTIONS)
 
diff --git a/src/uix/eidos/lib/config.ts b/src/uix/eidos/lib/config.ts
index 4575d18b7..759445f08 100644
--- a/src/uix/eidos/lib/config.ts
+++ b/src/uix/eidos/lib/config.ts
@@ -4,6 +4,7 @@ import {
 	BORDER_STYLE_KEYS,
 	BORDER_WIDTH_KEYS,
 	COLOR_ROLES,
+	COLOR_ROLE_SLOTS,
 	COLOR_SCALE_STEPS,
 	CONTAINER_WIDTH_KEYS,
 	CONTENT_COLOR_KEYS,
@@ -55,6 +56,8 @@ const BORDER_WIDTH_KEY_SET = new Set<string>(BORDER_WIDTH_KEYS)
 const BORDER_STYLE_KEY_SET = new Set<string>(BORDER_STYLE_KEYS)
 const BORDER_COLOR_KEY_SET = new Set<string>(BORDER_COLOR_KEYS)
 const CONTENT_COLOR_KEY_SET = new Set<string>(CONTENT_COLOR_KEYS)
+const COLOR_ROLE_SLOT_SET = new Set<string>(COLOR_ROLE_SLOTS)
+const COLOR_SCALE_STEP_SET = new Set<string>(COLOR_SCALE_STEPS)
 const CONTAINER_WIDTH_KEY_SET = new Set<string>(CONTAINER_WIDTH_KEYS)
 const CONTENT_WIDTH_KEY_SET = new Set<string>(CONTENT_WIDTH_KEYS)
 const DENSITY_KEY_SET = new Set<string>(DENSITY_KEYS)
@@ -454,6 +457,14 @@ function validateColorRole(
 		return
 	}
 
+	if (roleDef !== undefined && typeof roleDef !== 'string' && !isPlainRecord(roleDef)) {
+		issues.push({
+			path,
+			message: 'color role definition must be a scale name or plain object'
+		})
+		return
+	}
+
 	const scaleName = resolveRoleScaleName(roleDef)
 	if (!scaleName) {
 		issues.push({
@@ -463,6 +474,10 @@ function validateColorRole(
 		return
 	}
 
+	if (typeof roleDef !== 'string' && roleDef?.slots !== undefined) {
+		validateColorRoleSlots(`${path}.slots`, roleDef.slots, issues)
+	}
+
 	const themeEntries = Object.entries(themes)
 	if (themeEntries.length === 0) {
 		if (!hasOwn(globalScales, scaleName)) {
@@ -484,6 +499,36 @@ function validateColorRole(
 	}
 }
 
+function validateColorRoleSlots(
+	path: string,
+	slots: unknown,
+	issues: EidosValidationIssue[]
+): void {
+	if (!isPlainRecord(slots)) {
+		issues.push({
+			path,
+			message: 'color role slots must be a plain object'
+		})
+		return
+	}
+
+	for (const [slot, step] of Object.entries(slots)) {
+		if (!COLOR_ROLE_SLOT_SET.has(slot)) {
+			issues.push({
+				path: `${path}.${slot}`,
+				message: 'unknown color role slot'
+			})
+			continue
+		}
+		if (typeof step !== 'string' || !COLOR_SCALE_STEP_SET.has(step)) {
+			issues.push({
+				path: `${path}.${slot}`,
+				message: 'color role slot must point to a scale step from 1 to 12'
+			})
+		}
+	}
+}
+
 function validateTypography(options: EidosConfig, issues: EidosValidationIssue[]): void {
 	const typography = options.primitives.typography
 	if (!typography) return