Chroma and Hue Angle Calculator

CIE L*a*b* Color Space

For batch calculations, please click here.

Why using Chroma & Hue Angle? Read more.

For reverse calculations, from L*C*h° to L*a*b*, click here.

For the transformation of liquid sample spectra to L*a*b*, Chroma, and Hue Angle: click here.

For DeltaE calculations: click here.

Chroma (C*)
--
Hue Angle (h°)
--°
RGB values: --
Note: Color conversion uses the CIE L*a*b* to sRGB transformation with D65 illuminant (standard daylight). The displayed color is an approximation and may vary depending on your screen calibration.
Reference: CIE 1976 L*a*b* color space (CIELAB) - ISO/CIE 11664-4:2019
Formulas:
• Chroma = √(a² + b²)
• Hue Angle = atan2(b, a) converted to degrees [0-360°]
Note: calculations in JavaScript