 The union mark, however, remained a part of the Swedish flag until 1905, when a Law of 28 October 1905, stipulated the exclusion of the union mark as of 1 November 1905.On 1 November 1905, the triple-tailed flag also became the Swedish naval jack.The Flag law of 22 June 1906 further regulated the use and design of the flag, specifying the colors as "ljust mellanblå" (light medium blue) and "guldgul" (golden yellow), a departure from the previously common darker shade of blue.