RGB to LCH Converter

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rgb(0, 0, 0)

RGB Input

LCH Output

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Convert standard RGB color definitions into LCH, the cylindrical form of CIELAB built from lightness, chroma, and hue.

Input formats

Provide colors using the standard rgb(r, g, b) syntax with channel values ranging from 0 to 255. Each line is parsed independently in batch mode.

LCH output

rgb(255, 87, 51) becomes lch(61.03% 84.68 41.36). Lightness prints as a percentage, chroma as a plain number, and hue as a degree value from 0 to 360.

Isolating hue or lightness

Because LCH separates lightness, chroma, and hue into independent axes, changing just the hue number rotates a color around the color wheel while keeping how light and how vivid it looks unchanged, something RGB’s three intertwined channels can’t do directly.

Frequently Asked Questions

What RGB format does it accept?

CSS rgb() strings like rgb(255, 87, 51), with channels from 0 to 255. Paste one color per line for batch conversion.

What does each LCH number mean?

L is lightness from 0 to 100, C is chroma, or distance from gray, and H is a hue angle from 0 to 360 degrees.

Why would I want LCH instead of RGB?

LCH separates lightness, colorfulness, and hue in a way that matches perception more closely than RGB channels do, which makes it easier to build a color scale where each step looks evenly spaced, or to shift only the hue of a color while keeping its brightness and intensity fixed.