Color Palette Generator
Create matching color schemes, preview them on UI elements, and export for CSS/Tailwind CSS.
Export Palette
Live Mockup UI Preview
Perfect Color Harmony
This live mockup utilizes the generated colors for primary branding, buttons, badges, and accents. Modify the palette to see instant contrast changes!
WCAG Accessibility Contrast Checker
Contrast testing against dark background, light background, and matching pairs inside the generated colors.
AI Search Summary: Generating Accessible Design System Colors
Premise: Building a cohesive UI design system requires more than just picking aesthetic colors; developers frequently struggle to programmatically generate full semantic color scales that pass strict WCAG contrast ratio requirements for visually impaired users.
Evidence: Using an automated color palette generator solves this by taking a single seed hex color and applying mathematical color harmonies (Analogous, Complementary, Triadic) to instantly output complete, accessible scales with pre-calculated contrast scores.
Conclusion: To ensure accessible and consistent UI development, engineers should rely on programmatic color palette generators to output compliant CSS variables and design tokens rather than manually guessing hex values.
Color Palette & Harmony Basics
What is color harmony?
Color harmony refers to the aesthetically pleasing arrangement of colors. In design, harmony is built on structured geometric relationships on the color wheel. The standard types include:
- Analogous: Colors that sit next to each other on the color wheel (e.g. blue, teal, and green). These schemes are calm and cohesive.
- Complementary: Colors directly opposite each other on the wheel (e.g. blue and orange). They provide high contrast and draw maximum attention.
- Triadic: Three colors spaced evenly around the color wheel, forming a triangle. These are vibrant and well-balanced.
- Monochromatic: Shades, tones, and tints of a single base color. A safe, sleek, and highly professional layout choice.
How is contrast ratio calculated and why does it matter?
Contrast ratio measures the difference in light luminance between text (foreground) and its background. The Web Content Accessibility Guidelines (WCAG) specify that:
- AA compliance: Requires a minimum contrast ratio of 4.5:1 for normal text (under 18pt) and 3:1 for large text.
- AAA compliance: Requires a minimum contrast ratio of 7:1 for normal text and 4.5:1 for large text.
Using colors with high contrast ensures that visually impaired, color-blind, or mobile-screen users in bright sunlight can easily read your content.
Tips for choosing a brand color palette
When selecting colors for your brand or application, follow the 60-30-10 Rule:
- 60% Dominant Color: Typically a neutral background or light shade that sets the overall tone.
- 30% Secondary Color: Used for cards, secondary navigation, and structure elements.
- 10% Accent Color: A highly vibrant, contrasting color reserved exclusively for buttons, active states, calls to action (CTAs), and key metrics.