Definition of hyacinth blue
: a deep purplish blue that is slightly bluer than mazarine blue, redder and paler than average sapphire (see sapphire sense 2a), and redder, lighter, and stronger than cyanine blue (see cyanine blue sense 1b)
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“Hyacinth blue.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/hyacinth%20blue. Accessed 26 Sep. 2021.
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