Spectrum → L*a*b* Converter

CIE L*a*b* Batch Processor from Absorbance Spectra

OIV-MA-AS2-11 · CIE 1964 10° · Illuminant D65
⚙ Measurement Parameters

Will be normalised to 10 mm reference (OIV)

1 = undiluted · 5 = 1 vol wine + 4 vol water

How parameters are applied DO_corrected = DO_measured × dilution_factor
DO_10mm = DO_corrected × (10 / path_mm)
T (%) = 10−DO_10mm × 100 → XYZ (CIE 1964 10°, D65) → L*a*b*
📂 Input File
📊
Drop your CSV file here or click to browse
Separator: semicolon (;) · Decimal: period (.) · 380–780 nm, step 5 nm (81 values)
✅
Expected CSV format Row 1 (header): Wavelength_(nm);380;385;390;…;780
Data rows: Sample_name;val1;val2;…;val81 — one spectrum per row.
Any row with an empty first column is ignored.
Processing spectra…
0
Samples
—
Mean L*
—
Mean a*
—
Mean b*
Sample Color L* a* b* Chroma C* Hue h°