Above is a picture taken from bush, which leafs are turned from green to red. The spectrum measured from a red leaf can be seen below.

Color coordinates calculated from the spectrum
Spectrum Red
x 0.5651
y 0.3305
z 0.1044
X 27.9087
Y 16.3247
Z 5.1547
R 48.9461
G 9.3619
B 5.1122
L* 47.3976
a* 59.1899
b* 36.9165
u' 0.3873
v' 0.5097
u* 116.8332
v* 25.4024

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