Color Picker & Converter
Convert HEX, RGB, HSL, HSV and CMYK with a live picker.
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About the Color Picker & Converter
Pick a colour and convert it everywhere. The Toolcenter Color Picker & Converter shows HEX, RGB, HSL, HSV and CMYK for any colour, checks contrast against black and white for WCAG AA, and generates an 11-step tint/shade ramp plus complementary, triadic and analogous harmonies you can click to adopt.
How to use it
- 1Pick a colour with the swatch or type a HEX value.
- 2Copy any format (HEX, RGB, HSL, HSV, CMYK).
- 3Check the contrast-ratio readouts.
- 4Click a tint, shade or harmony colour to continue from it.
Key features
- HEX, RGB, HSL, HSV and CMYK
- WCAG contrast check on black and white
- 11-step tint and shade ramp
- Complementary, triadic and analogous harmonies
- One-click copy for every format
Frequently asked questions
What contrast ratio do I need for accessibility?+
WCAG AA requires 4.5:1 for normal text and 3:1 for large text. The tool shows whether your colour passes on white and on black.
How is CMYK calculated?+
From RGB using the standard naive conversion. For print, always confirm against your printer’s ICC profile.
What are tints and shades?+
Tints add white (lighter), shades add black (darker). The ramp keeps hue and saturation while stepping lightness.
Is anything uploaded?+
No. All colour maths runs in your browser.