Spectral Comparison
Warm White LED compared to blackbody

Warm White LED (fatter arrows) compared to blackbody 3298.6 (thinner arrows)
Warm White LED (fatter arrows) compared to blackbody 3298.6 (thinner arrows)
Usage note: To see some preset views, click 'view' arrows below the 3D picture.
Lumileds Warm White LED = Chain of component arrows with cyl radius = 0.03. Stimulus vector = [3.613, 1.386, 1.013]
Correlated color temperature = 3298.6.
Reference light = blackbody 3298.6 = Chain of arrows with cyl radius = 0.02 . Stimulus vector = [3.545, 1.415, 1.195]
Fattest arrows show the orthonormal components:
Stimulus components in orthonormal system = 3 arrows of radius = 0.04, gray, red, and blue. Stimulus vector = [3.613, 1.386, 1.013].
The large spheres are the blackbody locus at a fixed radius from origin.
Starting with the reddest, the temperatures are: [2000, 3000, 4000, 5000, 7000, 1e+004, 2e+004, 1e+005]