Color Palette Generator
Generate color schemes from one base color
Color Palette Generator tool
Color Palette Generator: key facts
- What it does
- Generate color schemes from one base color
- Category
- Generators
- Cost
- Free, with no account, sign-up, or install.
- Your data
- Runs entirely in your browser — the files and text you enter are never uploaded to a server.
- Last reviewed
- . Report an incorrect result.
Understanding the Color Palette Generator
Picking one color you like is easy; finding three or four that work together is the hard part. This palette generator applies established color-theory relationships to a single base color and returns a matching scheme, so you start from harmony instead of trial and error.
Choose a base color with the picker or by typing a hex value, then switch between five harmony rules: complementary (the opposite hue), analogous (neighbors on the wheel), triadic (three evenly spaced hues), split-complementary, and monochromatic (one hue at varied lightness). The math runs in HSL space, rotating the hue by the right number of degrees for each rule, which keeps saturation and lightness consistent across the swatches.
Web designers building a brand system, developers who need accent colors that do not clash, and anyone designing a chart or slide deck use it to assemble a usable palette in seconds. Every swatch shows its HEX, RGB, and HSL values, each copyable with a single click.
Getting a result
- Set your base color with the color picker or by entering a hex code.
- Pick a harmony rule — Complementary, Analogous, Triadic, Split-Complementary, or Monochromatic.
- Review the generated swatches, which update instantly as you change the base or the rule.
- Click the HEX, RGB, or HSL line on any swatch to copy that value to your clipboard.
Harmonies derived by rotating hue
From a base colour the generator produces a set of related colours by rotating hue around the colour wheel while holding saturation and lightness. Each harmony is a different rotation pattern: complementary takes the opposite point, triadic three points evenly spaced, analogous a group of neighbours, and so on.
Working in hue space is what makes the results cohere. Colours sharing saturation and lightness read as belonging to the same family regardless of hue, which is why a rotation produces a palette rather than an arbitrary collection.
The harmonies suit different purposes. Analogous schemes are harmonious and low-contrast, good for backgrounds and calm interfaces. Complementary is high-contrast and draws attention, which is why it suits accents. Triadic is vivid and harder to balance.
- Complementary rotates 180 degrees to the opposite hue.
- Triadic places three colours 120 degrees apart.
- Analogous takes neighbours within roughly 30 degrees either side.
Reasons to use it here
- The schemes come from real color-theory hue rotations computed in HSL, not random colors, so the results are genuinely coordinated.
- Each swatch exposes HEX, RGB, and HSL and copies the exact format you click, saving a separate conversion step.
- Five harmony rules cover the common design needs — from a single high-contrast accent (complementary) to a calm, related set (analogous).
- It runs entirely in your browser with no library, so it is instant and nothing about your brand colors is shared.
From harmony to a usable palette
A harmony is a starting point, not a design. Interfaces are mostly neutral: a common and durable structure is one dominant colour, one accent, and a set of greys, roughly in a 60/30/10 proportion. Using three saturated colours in equal measure is the most common way a generated palette produces something unusable.
You also need more than one value per hue. Real interfaces want a scale — light tints for backgrounds, mid tones for borders, dark shades for text — which means varying lightness within each hue rather than only rotating hue. That is what design system colour ramps are.
Two constraints to check before committing. Contrast is not implied by harmony: two colours can be perfectly complementary and fail accessibility as text on background, so measure the ratio and aim for at least 4.5:1 for body text. And around one man in twelve has some form of colour vision deficiency, most commonly red-green, so never encode meaning in hue alone — pair it with a label, an icon, or a pattern. Note too that HSL lightness is not perceived brightness, so equal-lightness colours can look very different in weight.
Frequently Asked Questions
What is a triadic color scheme?
A triadic scheme uses three hues spaced evenly around the color wheel, 120 degrees apart. It is vibrant and balanced — one color usually leads while the other two accent — which makes it popular for playful, energetic designs.
When should I use complementary versus analogous colors?
Complementary pairs (opposite hues) create strong contrast and draw attention, great for calls to action. Analogous colors (neighbors on the wheel) are low-contrast and soothing, better for backgrounds and cohesive, understated layouts.
Why do my monochromatic swatches share the same hue?
That is the definition of monochromatic — a single hue varied only in lightness (and here, kept at the same saturation). It gives you tints and shades of one color, ideal for minimal interfaces and depth without introducing new colors.
Are these colors accessible for text?
Harmony rules address aesthetics, not contrast ratios. Always check a foreground/background pair against WCAG contrast guidelines before using it for text — a beautiful palette can still fail readability if two similar-lightness colors are layered.
