Light & Optics Labλ = c / f • E = hf

495 nm to RGB & Color Calculator

Approximate how 495 nm monochromatic spectral light can be represented in sRGB, and calculate CIE 1931 tristimulus values, THz frequency, and photon energy.

CIE 1931 Spectral Synthesis
495 nm
Cyan
#00FFEB
nm
380 nm (Violet)555 nm (Peak)750 nm (Deep Red)
Frequency
605.641 THz
Photon Energy
2.505 eV
sRGB Channels
0, 255, 235
CIE 1931 XYZ
0.0114, 0.2633

Why You See This Color (495 nm)

At 495 nm, incoming photons stimulate both Short (S) and Medium (M) cone opsins simultaneously. The visual cortex compares the differential ratio between S-cone and M-cone activation, synthesizing the vibrant perception of cyan and sky blue. With an oscillation frequency of 605.641 THz and photon energy of 2.505 eV, this wavelength is converted into sRGB coordinates by projecting its spectral chromaticity point onto the CIE 1931 standard observer locus.

Physical Parameter Breakdown

Wavelength (λ):495 nm (495 × 10⁻⁹ m)
Oscillation Frequency (f):605.641 THz
Photon Quantum Energy (E):2.505 eV
CIE 1931 Tristimulus (XYZ):X:0.0114 Y:0.2633 Z:0.3551
Traian Anghel
Traian AnghelAuthor & Reviewer

Physics Teacher & Educational TechnologistBrăila, Romania

Last Reviewed: August 2026
Wave Lab calculators are constructed using rigorous peer-reviewed physics formulas from verified metrological repositories. Every equation, spectral conversion, and acoustic property is tested against NIST, CIE, and ISO datasets.
Verified Sources:NIST CODATACIE 1931 2° ObserverNASA Glenn Research

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