Complementary pairs maximize contrast and feel energetic. They are used for sports, gaming, and food brands where vibrancy matters. The trap is that pure complements vibrate against each other if both are at full saturation. Mute one, or push it toward a neutral.
Color glossary
Complementary Palette
Two hues directly opposite on the color wheel — for example blue and orange, red and green.
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Primary Color
The signature hue that identifies a brand and drives main CTAs and navigation surfaces.
Secondary Color
A supporting hue that complements the primary, used for less critical UI like tags, secondary buttons, and chart series.
Accent Color
A high-saturation contrast color used sparingly to emphasize one or two elements per screen.
WCAG Contrast Ratio
The luminance ratio between two colors, used by the Web Content Accessibility Guidelines to measure legibility.
Monochrome Palette
A palette built from a single hue, varying only saturation and lightness.
Analogous Palette
Three colors adjacent on the color wheel, typically within 30 degrees of each other.