Triadic harmonies are prized in design and branding because they deliver high visual impact without clashing. The 120-degree spacing ensures each color is distinct yet balanced. This tool accepts any color format - hex codes like #3366cc, RGB like rgb(51, 102, 204), or HSL like hsl(220, 60%, 50%) - and instantly generates the two harmony partners. Everything runs in your browser - no upload, no account, no limits.
Private browser utility / Color & Design
Triadic Color Generator
Runs entirely in your browser - no upload, no sign-up.
Base color
HEX
#3366ccRGB
rgb(51, 102, 204)HSL
hsl(220, 60%, 50%)Triadic +120°
HEX
#cc3366RGB
rgb(204, 51, 102)HSL
hsl(340, 60%, 50%)Triadic +240°
HEX
#66cc33RGB
rgb(102, 204, 51)HSL
hsl(100, 60%, 50%)What is a triadic color scheme?
A triadic color scheme uses three colors evenly spaced 120 degrees apart on the color wheel, creating vibrant, balanced compositions. This tool generates all three colors instantly from a base color in hex, RGB or HSL format, showing each in multiple formats with contrast-aware text for readability.
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How to use
- 01Enter a base color
Type or paste a color in hex (#3366cc), RGB (rgb(51, 102, 204)) or HSL (hsl(220, 60%, 50%)) format, or pick one with the native color picker.
- 02View the triadic harmony
The tool instantly generates the two harmony partners - each 120° and 240° from your base - and displays all three in hex, RGB and HSL with live color swatches.
- 03Copy and use
Click any swatch to copy its hex code, or use Copy All to grab all three hex values at once. Paste into your design tool, CSS or color palette.
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Who it's for
- Graphic designers and brand teams building vibrant, balanced color palettes for logos, marketing materials and brand guidelines.
- Web and UI designers creating accessible color schemes for interfaces where high contrast and visual hierarchy matter.
- Illustrators and digital artists exploring color combinations for paintings, digital art and character design.
- Interior designers and architects planning room schemes and building exteriors using harmonious color relationships.
FAQ
Is this triadic color generator free?
Yes - it's 100% free with no sign-up and no limits. It runs entirely in your browser.
Are my colors uploaded anywhere?
No. The color math is plain JavaScript running on your device - nothing is sent to a server, and it keeps working offline once the page is loaded.
What color formats does it accept?
Hex codes (#3366cc or #36c), RGB (rgb(51, 102, 204)), and HSL (hsl(220, 60%, 50%)). Whitespace is flexible - the tool normalizes all formats automatically.
What happens with grayscale colors?
Grayscale colors (zero saturation) have no hue, so all three triadic positions land on the same gray. This is correct per color theory - a gray has no color family to harmonize with.
Can I use triadic colors for text and backgrounds?
Yes, but check contrast. This tool shows contrast-aware text (black or white) on each swatch to guide readability. For WCAG AA compliance, aim for at least 4.5:1 contrast ratio between text and background.
How do triadic colors differ from complementary colors?
Complementary colors are 180° apart (two colors), creating maximum contrast. Triadic colors are 120° apart (three colors), offering more balance and less tension while still delivering visual impact.
Can I generate other color harmonies?
This tool focuses on triadic (120° spacing). For analogous, complementary, split-complementary or tetradic harmonies, try a dedicated color palette generator.