Above is a picture taken from tree, which leafs are still green. The spectrum measured from a green leaf can be seen below.

Color coordinates calculated from the spectrum
Spectrum Green
x 0.3343
y 0.4145
z 0.2512
X 7.0667
Y 8.7601
Z 5.3095
R 6.3710
G 9.3254
B 5.2689
L* 35.5182
a* -11.7357
b* 15.7176
u' 0.1831
v' 0.5106
u* -6.7427
v* 19.4618

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