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Color Vision Lab

Light & Optics

RGB Spotlight Mixer

RGB
R+G=Yellow · R+B=Magenta · G+B=Cyan · R+G+B=White

Intensity Controls

Red (~700nm)80%
Green (~550nm)80%
Blue (~450nm)80%

Center Mix Output

#CCCCCC
rgb(204, 204, 204)
Mixed

Eye Cone Responses

L-cone (long / red ~560nm)80%
M-cone (medium / green ~530nm)70%
S-cone (short / blue ~420nm)72%

Your brain interprets L+M+S signals to perceive all colours.

Colour Blindness Simulator

Normal
#CCCCCC
Simulated
#CCCCCC

Visible Spectrum — Click to Pick Wavelength

380nm (Violet)↑ Click to select wavelength700nm (Red)
550 nm
RGB: (146, 255, 0) · #92FF00
Green
Science: Human eyes have three cone types — L (~560nm peak, "red"), M (~530nm, "green"), S (~420nm, "blue"). All perceived colours arise from different combinations of these three signals. Colour blindness occurs when a cone type is absent or defective — protanopia and deuteranopia each affect ~4% of males.