Monochromatic Harmony Calculator
Drag the handle around the wheel or use sliders below
Generated Harmonies (4 Colors)
Deep Shade
#1D2530oklch(0.262 0.024 256.4)
Primary Base
#344256oklch(0.375 0.039 257.3)
Vibrant Tint
#456BA1oklch(0.524 0.096 257.3)
Subtle Soft
#8293ABoklch(0.658 0.041 257.0)
Live UI Component Preview
Apex Analytics
Team Dashboard
$84,290
14,820
Optimal
Interactive Button & State Styles
Verify clickability, state contrasts, and visual weight across primary and secondary controls.
WCAG 2.1 Contrast Matrix
Evaluates minimum contrast ratios for regular body text (4.5:1 AA, 7:1 AAA) and large text (3:1).
| Color Role | Hex | On Pure White (#FFF) | On Dark Obsidian (#0B0F19) | Recommended Usage |
|---|---|---|---|---|
Deep Shade | #1D2530 | 15.45:1(AAA) | 1.24:1(Fail) | Best on Light UI / Backgrounds |
Primary Base | #344256 | 10.20:1(AAA) | 1.88:1(Fail) | Best on Light UI / Backgrounds |
Vibrant Tint | #456BA1 | 5.43:1(AA) | 3.53:1(AA (large text)) | Best on Light UI / Backgrounds |
Subtle Soft | #8293AB | 3.13:1(AA (large text)) | 6.12:1(AA) | Best on Dark UI / Buttons |
50–950 Tailwind Shade Ramp
Click any swatch to copy its HEX value. Formatted for Tailwind CSS v4 / v3 color configurations.
Ready-to-Use Code Snippets
// tailwind.config.js / CSS @theme
module.exports = {
theme: {
extend: {
colors: {
primary: {
50: '#F6F7F8',
100: '#EAEDF0',
200: '#CCD4E0',
300: '#ACBACD',
400: '#869AB6',
500: '#1D2530',
600: '#506786',
700: '#41536C',
800: '#303D50',
900: '#1F2938',
950: '#121821',
},
secondary: '#344256',
accent: '#456BA1',
}
}
}
};Understanding Monochromatic Harmony
Monochromatic schemes vary the tint (lightness) and shade (depth) of a single base hue. It is the foundation of modern clean UI design (such as Linear, Vercel, and Apple). Because all colors share the exact same hue angle, visual clashing is mathematically impossible, resulting in a cohesive, polished interface.
✓Ideal Use Cases in Web & App UI
- •Minimalist SaaS dashboards and developer portals.
- •Content-heavy applications, blogs, and documentation hubs.
- •Typography-first interfaces where photography or charts provide all needed color.
✗Common Design Mistakes to Avoid
- •Insufficient lightness contrast between adjacent background cards and borders.
- •Relying on subtle monochromatic shades for accessibility-critical states without secondary icons.
How to Structure Monochromatic Harmony in Production Code
Follow this token role hierarchy when integrating monochromatic harmony spokes into your design system tokens:
Base Surface & Canvas
Use shade 50 (or 950 in dark mode) as your primary canvas background tint to establish emotional mood without compromising readability.
Borders & Secondary Pills
Apply secondary harmony spokes to component card borders, tag badges, sidebar active indicators, and chart telemetry tracks.
High-Impact Action & CTA
Reserve your sharpest harmony spoke for conversion buttons, primary checkout buttons, and interactive focus rings.
Other Color Harmony Calculators
Complementary Harmony
Two colors positioned directly opposite on the wheel (180° apart).
Triadic Harmony
Three colors evenly spaced around the color wheel (120° apart).
Split-Complementary Harmony
A base color paired with the two colors adjacent to its complement (150° and 210°).
Analogous Harmony
Three colors sitting side-by-side on the wheel (typically 30° apart).
Tetradic (Square) Harmony
Four colors arranged into two complementary pairs or spaced at 90° intervals.