Composition of Spectrum Hues. 



21 



TABLE OF PERCENTAGES OF COMPONENT COLORS IN THE 

 CONNECTING HUES OF THE CHROMATIC SCALE. 



The following table shows the relative percentages, 

 in color-wheel measurement, of the two components in 

 each of the hues connecting adjacent pairs of the six 

 spectrum colors as represented on the original Plates of 

 this work; together with an equal number of exact inter- 

 mediates (not shown on the Plates), the latter in lower- 

 case type and not indicated by symbols. 



Num- 

 ber. 



Color. 



Red. 



Orange. 



Yellow. 



Green. 



Blue. 



Violet. 



Wave- 

 length. 1 



2 

 3 

 4 



6 

 7 

 8 

 9 



n 



12 



13 



14 



\l 



17 



18 

 19 

 20 

 21 

 22 

 23 

 24 

 25 

 26 

 27 

 28 

 29 

 30 



Red 



100 



90 

 80 

 70 

 60 

 50 

 40 

 30 

 20 

 10 













644 



598 

 577 



10 

 20 

 30 

 40 

 50 

 60 

 70 

 80 

 90 

 100 

 96 

 91 

 86 

 80 

 73.5 

 65 

 56.5 

 47 

 36.5 

 25 

 13.5 











O-R 



















OO-R 



















R-O 



















OR-O 



















Orange 













4 

 9 



14 

 20 



26.5 

 35 



43.5 

 53 



63.5 

 75 



86.5 

 100 



87 

 75 



64 

 55 



46 

 39 



31 









OY-O 























Y-O 



















O-Y 



















YO-Y 



















O-YY 





















Yellow 







13 

 25 

 36 

 45 



54 

 61 



69 











YO-Y 

 G-Y 























GG-Y 

























As determined by Dr. P. G. Nutting, Associate Physicist, U. S. Bureau of Standards. 



