Lady with an Ermine by Leonardo da Vinci between 1489 and 1490.
Tertiary colors are the colors made by mixing a secondary and the primary colors.
Here are the list of the tertiary colors
= > yellow green
=> yellow orange
=> red orange
=> red violet
=> blue violet
=> blue green
Louis Henry Sullivan was an American designer, and has been known as the "father of skyscrapers" and "father of modernism". He is considered by numerous as the designer of the advanced skyscraper, was a persuasive engineer and commentator of the Chicago School, was a tutor to Frank Lloyd Wright, and a motivation to the Chicago gathering of draftsmen who have come to be known as the Prairie School. Alongside Wright and Henry Hobson Richardson, Sullivan is one of "the perceived trinity of American architecture".
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