Color wheel 620nm 800 nm 580nm 400nm 560 nm 430nm 490nm Complementary colors are diametrically opposite each other Thus absorption of 420-430 nm light renders a substance yellow. and absorption of 500-520 nm light makes it red green is unique in that it can be created by absoption close to 400 nm as well as absorption near 800 nmComplementary colors are diametrically opposite each other. Thus, absorption of 420-430 nm light renders a substance yellow, and absorption of 500-520 nm light makes it red. Green is unique in that it can be created by absoption close to 400 nm as well as absorption near 800 nm. Color wheel