Search gender: all male female Siyo Name Meaning, Kanji Variations. 1 names found. gender: all male female Name: siyo Katakana: シヨウ 0 Kanji: 紫耀 Meaning: 紫Purple. Name of the color. The color of blue and red mixed together. 耀Glittering. Shine. You can save your favorite names with NAZUKE PON > About Japanese Names > Search For Japanese Names > Siyo Name Meaning, Kanji Variations.