Brilliant blue is a shade of blue, or may refer to:

• RAL 5007 brilliant blue, an RAL color

• Brilliant blue FCF, a dye
• Brilliant cresyl blue, a stain used in microscopy
• Coomassie brilliant blue, a dye
• Remazol Brilliant Blue R, a dye

• "Brilliant Blue", a side B song on the single "Kyū Jō Show!!" by the Kanjani Eight
• Brilliant Blue (manga), a manga
• Daphne in the Brilliant Blue, a manga and television series

• Junonia rhadama, a butterfly of islands in the Indian Ocean
• Lepidochrysops asteris, a butterfly of South Africa

This disambiguation page lists articles associated with the title Brilliant blue.
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