Pick a color and drag the hue, saturation, and lightness sliders, and the tool updates the preview and value live.
Hue (0–360° color wheel), Saturation (vividness) and Lightness (brightness). It is a more intuitive model than raw RGB for editing colors.
Move the hue slider — adding 120° or 240° gives triadic colors, and 180° gives the complement.
The sliders set an offset from your base color, so resetting them to zero returns the original color exactly.