FAQ

Questions

Can I convert Yxy values measured in C illuminant to D65?

Answer

Yes. You need the following formula to convert from Yxy(C)to XYZ(C)to XYZ(D65) then to Yxy(D65).

XC = Y*(x/y); ZC = Y*((1-x-y)/y)
XD65 = XC*0.9691037
ZD65 = ZC*0.9210014

xD65 = XD65/(Y+ XD65 + ZD65)
yD65 = Y /(Y+ XD65 + ZD65)

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