521 nm to RGB & Color Calculator
Convert 521 nm monochromatic spectral light into exact digital sRGB, CIE 1931 tristimulus XYZ coordinates, THz frequency, and photon energy.
Why You See This Color (521 nm)
At 521 nm, the radiation strikes the human retina close to the peak photopic sensitivity curve V(λ) (555 nm). Both M-cones (chlorolabe) and L-cones (erythrolabe) are strongly depolarized, maximizing luminous efficacy per watt of optical power. The visual system perceives this radiant energy (575.417 THz, 2.38 eV) as brilliant emerald green to chartreuse, mapped here to digital sRGB gamut coordinates.
Physical Parameter Breakdown
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