20th-Century Blue Also Called Winsor Blue
This page is the CodyCross answer for the clue below from Deserts of the world, Group 1609, Puzzle 4 (Arches National Park).
Question
20th-Century Blue Also Called Winsor Blue
Answer
PHTHALO
Word Meaning:
PHTHALO — A phthalocyanine.
Definitions from Wiktionary.