OCXLY
OCXLY Tools · Design Utilities

Colour Palette Generator

Pick a seed colour, choose a harmony rule, and instantly generate a beautiful palette. Copy colours as HEX, RGB, or HSL. Export the full set as CSS variables, JSON, or an SVG file. Includes 10-step shade scales for every colour.

Seed
Harmony
Count
5
Export as
§ Shades

10-step shade scales for every palette colour

§ Theory

Colour harmony — what each mode means

Mode 01 · 02

Complementary & Split

Complementary — the colour directly opposite on the wheel (180°). High contrast, bold, vibrant. Best for CTA emphasis.

Split-complementary — the two colours adjacent to the complement (150° and 210°). Slightly softer and more nuanced.

Mode 03 · 04

Triadic & Tetradic

Triadic — three colours evenly spaced (120° apart). Visually rich and balanced. Popular in illustration and branding.

Tetradic — four colours 90° apart. Most complex harmony; works best when one colour dominates the composition.

Mode 05 · 06

Analogous & Monochromatic

Analogous — colours adjacent on the wheel (±30°). Naturally harmonious, cohesive, calming. Found everywhere in nature.

Monochromatic — varies only lightness and saturation of a single hue. The most restrained and elegant palette for minimal UI design.