Triadic Color Tool

The Triadic Color Tool generates three colors in a triadic relationship from a single base color, enabling designers and developers to build vibrant yet balanced palettes quickly. It targets UI designers, brand teams, and frontend engineers who need repeatable color tokens with precise values. Outputs include HEX, RGB, and HSL representations to support both CSS and design software workflows, with optional accessibility checks.

Conceptually, the tool converts the base color to a perceptual color space, rotates hue by ±120 degrees, and optionally adjusts saturation or lightness. The three resulting hues are normalized to valid color values and returned with corresponding RGB and HSL triplets. This approach ensures colors remain evenly spaced on the color wheel, providing higher perceived harmony than ad hoc selections.

Inputs required are the base color in HEX and optional adjustments such as saturation shift. The tool validates the color format and reports errors if the input is invalid. It can calculate contrast estimates against a foreground color or on a chosen background to help ensure legibility in UI contexts. The output supports deployment in design systems, CSS variables, tokens for Figma/Sketch, and code assets, reducing back-and-forth and preserving consistent color values across platforms.