Substance, such as indigo, used to whiten material such as textile or paper, or to give it a blue tint.
Top of the AAT hierarchies
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Materials Facet
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Materials (Hierarchy Name)
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materials (matter)
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<materials by function>
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colorant (material)
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dye
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<dye by composition or origin>
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synthetic dye
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bluing
[bluing 上藍(編號300263384)]。《藝術與建築索引典》。http://aat.teldap.tw/AATFullDisplay/300263384(2025/05/23瀏覽)。