How the palette is built
Analogous colors use nearby hue angles; complementary colors use opposite angles; split complementary, triadic and tetradic schemes distribute hues around the wheel. Monochromatic palettes vary lightness around one hue. These are starting points for design, not a scientific guarantee of beauty.
OKLCH separates perceived lightness, chroma and hue. Colors outside sRGB are brought into range by reducing chroma while keeping lightness and hue. Neutral colors have little or no visible hue. Contrast labels refer only to the suggested black or white text on each swatch; the table checks pairs separately.
Methods: Björn Ottosson, Oklab (2020), W3C CSS Color 4, and WCAG 2.2 contrast. No palette alone establishes full accessibility.
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