lch() functional notation expresses a given color in the LCH color space. It has the same L axis as
lab(), but uses polar coordinates C (Chroma) and H (Hue).
lch(29.2345% 44.2 27); lch(52.2345% 72.2 56.2); lch(52.2345% 72.2 56.2 / .5);
- Functional notation:
lab(L C H [/ A])
Lspecifies the CIE Lightness, and is a
0%representing black and
- The second argument
Cis the chroma (roughly representing the "amount of color"). Its minimum useful value is 0, while its maximum is theoretically unbounded (but in practice does not exceed 230).
- The third argument
His the hue angle.
0degpoints along the positive "a" axis (toward purplish red),
90degpoints along the positive "b" axis (toward mustard yellow),
180degpoints along the negative "a" axis (toward greenish cyan), and
270degpoints along the negative "b" axis (toward sky blue).
A(alpha) can be a
1, or a
<percentage>, where the number
|CSS Color Module Level 4||Working Draft||Initial definition|