Color Converter

How Color Format Conversion Works

Every color you can see on a screen lives in the sRGB color space and can be described in several coordinate systems. Toolkiya converts between HEX, RGB, HSL, HSV, and CMYK using the standard color-space transforms: HEX is just RGB in base 16, HSL and HSV are cylindrical reparameterizations of RGB derived from the channel min and max, and CMYK is computed from RGB with K = 1 - max(R, G, B) and the remaining channels normalized against K.

Enter a value in any format and the others update instantly. A live swatch shows the resulting color, alongside contrast ratios against black and white so you can check WCAG AA and AAA compliance for text. Everything runs in your browser using simple float math — no API call, no quota, no rounding to a server-side palette.

When to Convert Color Formats

Translating a brand HEX color into HSL so you can build a Tailwind-style color scale. Converting an RGB value from a designer's Figma file into CMYK for print. Picking an accessible text color against a known background by checking contrast ratios. Debugging a CSS variable that renders the wrong shade. Generating a hover color by nudging the lightness in HSL.

Why Convert Colors in Toolkiya

Color conversion is pure math — there is no reason a tool should require an account, an upload, or a network round trip. Toolkiya does the conversion in your browser instantly, with no signup, no rate limit, and no daily cap.

The tool works offline once the page is loaded, which is useful when you are designing on a flight or in an environment with restricted internet. There is no tracking attached to the color values you enter, so you can iterate on unreleased brand colors without worrying about leaks.

Tips for Working with Colors

Prefer HSL over HEX when building color systems — adjusting lightness gives a smooth visual scale, which HEX cannot. Remember CMYK conversion is approximate without an ICC profile; for print, always trust the printer's profile over a generic conversion. Use the contrast checker to confirm AA (4.5:1) or AAA (7:1) before shipping text, especially over gradients and images.