Color workbench

Create, convert, and validate colors in your browser.

ColorToolMage is a fast local workbench for designers, developers, creators, marketers, and anyone who needs a reliable color value. Convert notations, pick a color, check WCAG 2 contrast, and build a harmony or shade set. Input stays on this device.

This is not an image editor, a webmaster diagnostic, a generic generator, or a farm of thin hex-to-RGB pages. CMYK is an sRGB approximation. A contrast pass is not an accessibility compliance claim.

Convert

Move a color between HEX, RGB, HSL, HSV, CSS names, and approximate CMYK.

Color Converter
Paste a hex code, CSS name, or channel values and get the other notations at once. Pair queries such as hex to RGB live here instead of on thin extra pages.

Inspect

Pick and inspect a color visually without uploading an image.

Color Picker
Choose a color with the native picker and sliders, then copy its notations. This is a choose-and-inspect job, not a converter pair page and not an image sampler.

Contrast

Measure WCAG 2 contrast for a text and background pair.

Contrast Checker
Enter two colors and get the WCAG 2.2 sRGB contrast ratio plus independent AA/AAA results. The tool also suggests black or white text on the background.

Palette

Build complementary, analogous, triadic, tetradic, shade, and tint sets.

Palette Generator
Start from one color and build a related set. Harmony modes rotate hue. Shades mix toward black. Tints mix toward white.

4 public tools. Work stays on this device.