Where to find the colors your screen can't show you: a deep dive into gamuts and cones
moultano · x · 2026-10-28
Ryan Moulton's long-form article explains why some real-world colors — mostly intense cyans — can't be captured by digital photos or shown on screens: your three cone cell types only report response intensities, not wavelengths, so the brain reconstructs color purely from relative responses, and metamers can look identical.
- Screen gamuts are bounded by the CIE chromaticity diagram; vivid real-world cyans are systematically absent from the digital world
- The piece builds up from spectra and cone responses to gamut boundaries, then shows readers where to find these out-of-gamut colors outdoors
A widely re-shared technical explainer tied to display tech and color science.
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