Choose a Color Palette: Complementary, Analogous and Triadic Workflows

For a website or presentation, assign roles, generate candidates and test the text/background pairs. Choose a base color and scheme in the palette generator. A simple example starts with red #ff0000 and generates the complementary cyan #00ffff.

Compare four schemes and their outputs

The analogous endpoints also change HSL lightness to 35% and 65%. Generated values can therefore differ from examples that only rotate hue. The tool rounds HSL to integers, which can slightly change a generated channel value. An achromatic color has zero saturation, so rotating its hue alone produces no color difference.

Assign candidates to actual UI roles

A 60–30–10 split can be a starting point for large surfaces, supporting surfaces and accents. Area percentages alone do not determine readability. Choose the applicable threshold in the [contrast guide](/en/blog/contrast-ratio-guide/) and measure the pair in the [checker](/en/tools/contrast-checker/).

Copy the generated code into your design file

Cards display HEX, RGB and HSL, but their buttons copy HEX. Paste it into the [color converter](/en/tools/color-converter/) to copy another format. The [conversion guide](/en/blog/color-conversion-guide/) explains HSL rounding and alpha. Palette input accepts three- or six-digit HEX and excludes alpha.

Check hover, error and dark-mode states before publishing

Record each state’s foreground and background as a pair. With translucent glass panels or background images, inspect the least readable area as the underlying color changes. Underline links and add labels or line styles to charts so color is accompanied by another information cue.

You can also open the generator from the utility category. A favorite adds a shortcut in the same browser. Keep the base color and finished palette in your own design file.

Tools Hub editorial staff checked generated angles, counts, copy format and contrast examples on November 8, 2026.

FAQ

How many colors does each scheme generate?

This tool generates two complementary colors, three analogous colors, three triadic colors or five monochrome colors. Monochrome includes the original plus lightness values of 25, 45, 72 and 88%.

Can I use a generated color for button text immediately?

Measure the text/background pair first. White text on #3b82f6 is approximately 3.68:1, below the 4.5:1 AA threshold for normal text.

What format does a palette button copy?

Each button copies HEX only. RGB and HSL are displayed. Paste the HEX into the color converter to copy another format.

Must I follow a 60–30–10 area split?

It is a starting point for trying a layout, not a WCAG pass condition. Check information cues and contrast after assigning colors to real elements.

@misc{tools_hub_color_scheme_guide_2026,
  author = {{Tools Hub Editorial Team}},
  title = {Choose a Color Palette: Complementary, Analogous and Triadic Workflows},
  year = {2026},
  url = {https://the-tools-hub.net/en/blog/color-scheme-guide/}
}