Plural form of cerulean; multiple shades, pigments, or instances of deep blue or blue-green color.
Plural of cerulean, from Latin 'caeruleus.' The singular form became standard in English to describe the color, and the plural refers to multiple examples or variations.
Artists distinguish between different 'ceruleans'—cobalt cerulean, ultramarine cerulean—each with unique chemical compositions and different ways they interact with light on canvas.
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