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If violet made from red and blue appears browner than expected, what is the most likely cause?

Answer and explanation

Correct answer: Complementary contamination from a yellow bias or dirty tools

The governing concept is complementary contamination in subtractive pigment mixing. Yellow is complementary to violet, so a yellow-biased red or blue, or residue left on a brush or palette, can neutralise the violet and make it look dull brown. Equal quantities do not guarantee purity, while white would lighten rather than cause brownness; palette size is irrelevant. Therefore, option C is correct.

Related tags

Muddy VioletYellow ContaminationDirty ToolsPigment BiasColour MixingColour TheoryArt EducationClass 9 Mcq

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