Eight things, all visible.
Seven color formats
HEX, RGB, RGBA, HSL, HSLA, HSB, and CMYK. All present, all editable.
Live round-trip
Edit any field; the other six update instantly. Rounding is sane and visible.
Visual preview
A large swatch dominates the panel. Subtle borders ensure the color reads on light and dark backgrounds.
System color panel
One click hands off to the native macOS picker — eyedropper, sliders, palettes — and pulls the result back in every format.
Color history
The last 22 colors stay as visual swatches. Click a swatch to restore it across all seven formats.
Per-format copy
Every format has its own copy button. Grab the HEX or the HSL alone — no surrounding label.
Alpha-aware
RGBA and HSLA preserve transparency. The preview swatch shows the alpha channel against a checker.
State persistence
Current color and history persist between sessions. Re-open and your palette is intact.
Four moves between formats.
Pick or paste
Open the system picker, or paste a HEX string from a design doc.
Read the others
RGB, HSL, HSB, CMYK — all displayed in their canonical syntax.
Edit any field
Tweak the H of HSL; watch HEX, RGB, and HSB follow.
Copy or save
One-click copy on the format you want; the color saves itself to history.
The work it actually does.
Spec to code
Translate the HEX in a Figma file into HSL or RGB for SwiftUI / CSS / iOS.
System builds
Maintain consistent palettes across product surfaces by snapshotting brand swatches.
Web vs. print
Convert to CMYK for an export-to-PDF workflow without losing the source RGB.
Contrast checks
HSL's lightness component is great for tweaking until the contrast ratio passes.
Pixel sampling
Use the system eyedropper through the macOS picker; the captured color appears in every format.
Building palettes
Keep 22 swatches at hand for an ongoing theme exercise — restoring any with one click.
Things people ask before they download.
Which formats are supported?
HEX, RGB, RGBA, HSL, HSLA, HSB, and CMYK — seven in total.
How does the round-trip stay accurate?
Internally, the color is stored in a high-precision floating-point space. Each format is rendered from that source on demand, so editing any one is loss-free for the others.
Does it work with the macOS color picker?
Yes. One click hands off to the system picker (eyedropper, palettes, sliders) and pulls the chosen color back in every format.
How big is the history?
22 most recent colors. Click any swatch to restore it.
Is alpha supported?
RGBA and HSLA preserve and display the alpha channel; the preview shows it against a checkerboard.
Does this require network access?
No. Color conversion is fully local.