Search gender: all male female クレナイ Japanese Names Variations. 1 names found. gender: all male female Name: kurenai Katakana: クレナイ 0 Kanji: 紅 Meaning: 紅Red color. Bright red color. The color of safflower. Pigment made from safflower. A word that refers to women. You can save your favorite names with NAZUKE PON > About Japanese Names > Search Japanese Names By Kanji > クレナイ Japanese Names Variations.