diff --git a/plugins/dynamiques-blocks/_utilities/utilities.php b/plugins/dynamiques-blocks/_utilities/utilities.php
new file mode 100644
index 0000000..fa1e2ed
--- /dev/null
+++ b/plugins/dynamiques-blocks/_utilities/utilities.php
@@ -0,0 +1,41 @@
+<?php
+
+function get_color_hex_from_slug(?string $slug): ?string
+{
+	if (!$slug) return null;
+
+	$settings = wp_get_global_settings();
+	$palette  = $settings['color']['palette']['theme'] ?? [];
+
+	foreach ($palette as $c) {
+		if (($c['slug'] ?? null) === $slug) {
+			return $c['color'] ?? null; // ex "#0f6f63"
+		}
+	}
+	return null;
+}
+function is_color_light($color)
+{
+	// Si pas de couleur, considérer comme claire
+	if (empty($color)) {
+		return true;
+	}
+
+	$hex = str_replace("#", "", $color);
+
+	// Gérer les codes hex courts (3 caractères)
+	if (strlen($hex) === 3) {
+		$hex = $hex[0] . $hex[0] . $hex[1] . $hex[1] . $hex[2] . $hex[2];
+	}
+
+	// Convertir hex en RGB
+	$r = hexdec(substr($hex, 0, 2));
+	$g = hexdec(substr($hex, 2, 2));
+	$b = hexdec(substr($hex, 4, 2));
+
+	// Calculer la luminance relative (formule standard)
+	$luminance = (0.299 * $r + 0.587 * $g + 0.114 * $b) / 255;
+
+	// Si luminance > 0.5, la couleur est claire
+	return $luminance > 0.5;
+}
diff --git a/plugins/dynamiques-blocks/dynamiques-blocks.php b/plugins/dynamiques-blocks/dynamiques-blocks.php
index 8bf3b05..7227d93 100644
--- a/plugins/dynamiques-blocks/dynamiques-blocks.php
+++ b/plugins/dynamiques-blocks/dynamiques-blocks.php
@@ -19,6 +19,9 @@ if (! defined('ABSPATH')) {
 	exit; // Exit if accessed directly.
 }
 
+require_once __DIR__ . '/_utilities/utilities.php';
+
+
 function create_block_dynamiques_blocks_block_init()
 {