Tools / Color Converter
Color Converter.
Paste a color in any format — a hex code, rgb(), hsl(),
HSV, CMYK, or oklch() — and copy it back in every other. It all
runs in your browser; nothing is uploaded.
Not a recognizable color — try a hex like #1B2A4E.
- HEX
- RGB
- HSL
- HSV / HSB
- CMYK
- OKLCH
Studio
When the number has to match a real colour
A converted value is exact on screen and approximate everywhere else. Which reference you need depends on where the colour is going.
-
...onto paper
Start here if the palette gets printed. Screen colour and ink colour are not the same colour, and this is the deck that translates between them.
Pantone
Color Bridge Guide — coated
Listed on Amazon as Pantone Color Bridge Guide Coated | Pantone to CMYK, RGB & HTML Color Matching Fan Deck for Graphic Design, Branding & Print | GG6103B
View on Amazon -
...onto a screen you can trust
Start here if it stays digital. An uncalibrated monitor is the single most common reason a palette that looked right on your desk looks wrong everywhere else.
Calibrite
Display Plus HL colorimeter kit
Listed on Amazon as Calibrite Video Photo Kit with Display Plus HL Colorimeter and ColorChecker Passport Video 2, 10,000 Nit Monitor Calibration, Camera Color Matching
View on Amazon -
...by hand
Start here if you are mixing it. Wada's plates were flat printed colour; gansai pans are the closest everyday medium to them.
Kuretake
Gansai Tambi 36
Listed on Amazon as Kuretake GANSAI TAMBI Watercolor Paint Set 36 Colors
View on Amazon
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Which color format should I use?
For the web
HEX and RGB are interchangeable six-byte sRGB colors — use hex for brevity. HSL makes tints and shades a one-number tweak. OKLCH is the modern choice: its lightness is perceptually even, so accessible ramps and contrast behave predictably across hues.
For pickers & print
HSV / HSB is the model behind most color-picker squares (saturation × value). CMYK describes the four print inks — treat any RGB→CMYK number as a screen approximation and confirm with a proof, since print has a narrower gamut than your monitor.