Paste a hex color code and get its CIELUV values instantly. HEX and CIELUV describe the exact same color: base sixteen screen channels on one side, and the CIE 1976 L*u*v* space on the other, the CIELAB lightness with u and v measured from the D65 white on the u′v′ chromaticity diagram. See the live preview and a table of common hex to CIELUV conversions.
Questions
- Are HEX and CIELUV the same color?
- Yes. HEX and CIELUV are two notations of one color; the converter changes the notation, not the color. Converting back returns the same value, apart from rounding in spaces that use decimals.
- How do I convert HEX to CIELUV by hand?
- Split the hex code into its red, green and blue pairs, read each pair as a number from 0 to 255, then apply the CIELUV formula shown in How HEX to CIELUV Works above. The worked example on this page follows every step with your own color.
- Where does the alpha channel go?
- A hex code with eight digits carries opacity in its last pair (FF is fully opaque). CIELUV has a matching form with an extra alpha value; both are listed in the Formats section of this page.
- Is the HEX to CIELUV converter free?
- Yes. It runs in your browser with no sign in and no limit; convert as many values as you like. The color itself is the link, so any conversion can be shared or bookmarked.
