Light & Optics Labλ = c / f • E = hf

748 nm to RGB & Color Calculator

Convert 748 nm monochromatic spectral light into exact digital sRGB, CIE 1931 tristimulus XYZ coordinates, THz frequency, and photon energy.

CIE 1931 Spectral Synthesis
748 nm
Deep Red
#00A553
nm
380 nm (Violet)555 nm (Peak)750 nm (Deep Red)
Frequency
400.792 THz
Photon Energy
1.658 eV
sRGB Channels
0, 165, 83
CIE 1931 XYZ
0, 0
Advertisement

Why You See This Color (748 nm)

At 748 nm, photons interact exclusively with Long-wavelength sensitive (L) photoreceptor opsins in the fovea centralis. With a frequency of 400.792 THz and lower photon energy (1.658 eV), this stimulus yields the deep, saturated red sensation of monochromatic ruby and diode lasers. Near the 700–750 nm boundary, eye sensitivity tapers toward the infrared threshold.

Physical Parameter Breakdown

Wavelength (λ):748 nm (748 × 10⁻⁹ m)
Oscillation Frequency (f):400.792 THz
Photon Quantum Energy (E):1.658 eV
CIE 1931 Tristimulus (XYZ):X:0 Y:0 Z:0
lightcontrast-checker Lab Verified

Datacolor SpyderX Pro

Calibrare monitor rapida cu lens-based color engine

Calibrare 2 min
Lens-based precis
Fara senzor ambiental
$169
4.7(3,421)
View on Amazon
Paid link • Amazon
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

Related Physics Calculators