validate provided HEX-Code

cmd/utils/utils.go

@@ -4,6 +4,7 @@ import (
 	"encoding/json"
 	"errors"
 	"net/http"
+	"regexp"
 	"strconv"
 	"time"
 
@@ -20,6 +21,11 @@ func IDtoInt(id string) (int, error) {
 	}
 	return idInt, nil
 }
+func IsValidHexColor(color string) bool {
+	pattern := `^#?([A-Fa-f0-9]{6}|[A-Fa-f0-9]{3})$`
+	match, _ := regexp.MatchString(pattern, color)
+	return match
+}
 
 func HTTPErrorHandling(w http.ResponseWriter, r *http.Request, status int, message string) {
 	timestamp := time.Now().Format("2006-01-02_15-04-05")