# `Color.Spectral.Tables`

Standard CIE color matching functions and illuminant spectral power
distributions, tabulated at 5 nm intervals from 380 nm to 780 nm
(81 samples).

Sources:

* **CMFs** — CIE 1931 2° and CIE 1964 10° standard observer colour
  matching functions, CIE 15:2004.

* **D65, D50** — CIE 15:2004 Table T.1.

* **Illuminant A** — computed on demand from the Planckian radiator
  formula at `T = 2856 K` (see `Color.Spectral.illuminant/1`).

* **Illuminant C, E** — E is flat; C is computed from legacy
  tabulated values.

All values are relative; consumers should normalise by
`∫ S(λ) · ȳ(λ) dλ` (or the pre-computed `y_integral/2` value) to get
`Y = 1` at the reference white.

# `a`

# `cmf_1931`

# `cmf_1964`

# `d50`

# `d65`

# `e`

# `illuminants`

# `wavelength_count`

# `wavelengths`

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*Consult [api-reference.md](api-reference.md) for complete listing*