Best Free Online Color Converter
Color values in web development, design tools, and image processing APIs all use different formats: CSS uses HEX and RGB, design tools often work in HSB or HSL, and print workflows may use CMYK. Converting accurately between these formats by hand requires understanding the underlying color model mathematics, which is error-prone and slow. devtoolkit.sh's Color Converter handles bidirectional conversion between HEX, RGB, RGBA, HSL, HSLA, and HSB/HSV formats, with a live color preview that updates as you change any value. It's the fastest way to convert a color from a design mockup (in HEX or HSL) to the format needed by a CSS variable, a JavaScript canvas operation, or a color library parameter. The converter is especially useful when working between Figma (which exports HSL), browser DevTools (which shows HEX), and CSS animations (which benefit from HSL for lightness manipulation). The live preview makes it easy to verify that the conversion is accurate before copying values into your stylesheet or design system tokens.
FAQ
- What color formats are supported?
- HEX, HEX with alpha, RGB, RGBA, HSL, HSLA, and HSB/HSV. CSS color names can also be entered as starting values.
- Why would I use HSL over HEX?
- HSL is better for adjusting colors programmatically. Changing the L (lightness) value creates lighter or darker shades, and changing H (hue) shifts the color while maintaining saturation and brightness.
- Does it support CMYK?
- Currently the tool focuses on screen color formats. CMYK support is on the roadmap.