web-olo

Approximating olo — the color reported by Berkeley researchers in April 2025 after stimulating only the M cones of the human retina — via standard CIE and sRGB matrix transformations.

Live page: https://eagnespuerto.github.io/web-olo/

What it shows

• The LMS → XYZ → linear-sRGB matrix chain applied to a pure M-cone stimulus [0, 1, 0].
• Why the result falls outside every real display gamut.
• Three sRGB approximations (naive clip, white-axis gamut map, Oklab max-chroma).
• The same color rendered into Display P3, Rec. 2020, Adobe RGB via CSS color().
• Raw linear values in ACEScg and ProPhoto RGB, plus ICtCp and xvYCC notes.

Everything computes in-browser; the page is a single static index.html.

License

MIT — see LICENSE.