Your Monitor Can't Show Turquoise. Or 65% of Visible Colors.

Short summary

Standard RGB monitors display only ~36% of visible colors—a geometric rather than engineering limitation. Three primary wavelengths form a triangle inscribed in the horseshoe-shaped CIE 1931 chromaticity diagram, necessarily excluding roughly 65% of perceivable colors; this is why sRGB covers 35.9%, Adobe RGB reaches 52.1%, and even the UHDTV standard Rec. 2020 maxes out at 75.8%. Historical attempts to break this ceiling—Sharp's four-primary Quattron TVs (2010) and Canon/Toshiba's SED electron-emitter displays—failed because mapping RGB content to wider gamuts produces ambiguous results; laser cinema projectors succeed (90%+ coverage) via sub-nanometer spectral linewidths but introduce speckle artifacts, making this approach impractical for mass-market displays.

• •Three primaries form a triangle that geometrically cannot cover human-visible color space
• •Wider gamut standards (DCI-P3, Rec. 2020) improve coverage but hit the same theoretical limit
• •Multi-primary display attempts failed due to content compatibility; laser projectors work but aren't practical for consumers

Generated with AI, which can make mistakes.