Convert HEX, RGB and HSL colors locally, including transparency. Preview the color, choose an opaque color with the picker, and copy individual formats or download a report.
Colors are parsed and converted on your device without uploads, APIs, accounts or input history. The tool produces useful CSS representations, with explicit rounding rules and a local transparency preview.
HEX supports #RGB, #RGBA, #RRGGBB and #RRGGBBAA. RGB/RGBA and HSL/HSLA functions accept comma-separated channels or space-separated channels with optional slash alpha. RGB channels must be all numbers from 0 to 255 or all percentages. HSL accepts degree hue (optional deg suffix) and percentage saturation/lightness. Alpha accepts 0–1 or 0–100%. Input is limited to 200 characters.
No. This tool implements a deliberate subset: no named colors, currentColor, none, CSS variables, calc(), relative colors, scientific notation, mixed RGB channel units, multiline functions, angle units other than degrees, or wider-gamut formats such as Display P3, Lab and OKLCH. Out-of-range channels are rejected instead of clamped. Hue may be between -1,000,000 and 1,000,000 degrees and wraps into a full turn.
RGB channels are rounded to nearest 8-bit integers before output and HSL calculation. Alpha is retained numerically for RGB/HSL, displayed to six decimals. HEX alpha is rounded to an 8-bit byte, so 0.5 becomes 80 in HEX and converts back to approximately 0.501961. HSL channels are displayed to six decimals. Tiny rounding differences can occur on round trips. Opaque HEX output omits the alpha byte.
RGB colors with equal red, green and blue channels have no distinct hue. Their normalized HSL output uses hue 0 and saturation 0. Because HSL output is derived from normalized 8-bit RGB, your original HSL spelling and hue for achromatic colors are not preserved.
It shows the normalized RGB color and alpha composited over alternating light and dark squares. It is a visual aid, not a contrast check, color calibration or accessibility assessment. Display appearance depends on the browser and screen. The native picker chooses opaque colors and replaces any existing alpha.
No. Conversion runs in JavaScript on your device, with no API calls, uploads or saved input history. Copy and download happen only when selected. The report contains converted values and rounding notes.
